Charter school · Nevada County Office of Education

Twin Ridges Home Study Charter — Rating & test scores

111 New Mohawk Road, Nevada City · 208 students · Grades TK–8

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Campus map · © OpenStreetMap

Drawn from OpenStreetMap, inside the campus outline from the California School Campus Database (2025). Volunteers map it, so a new building may be missing. Buildings with no mapped height are drawn one storey high.

A picture of the campus, not an attendance boundary or a rating.

Schools maintain a closed campus policy. For students’ safety, visitors may enter a campus only with the school’s official permission; this drawing implies no permission to enter.

Scope Score 70

Needs SupportScope Score · 21st percentile. Higher than 21 in 100 of the 5,726 California public elementary schools we score.

75 is the typical California school. 100 is the best result in the state. How the score is built

Well below California in English (reading and writing) and math, grades 3–5, spring 2026: 31% and 16% scored Proficient or Advanced, against 46% and 42%.

Source for this line
Source
California’s state tests (CAASPP), California Department of Education, spring 2026
Students
all students tested in grades 3–5: 62
Comparison
California: CDE’s grade 3, 4 and 5 rows for the whole state combined, weighted by students tested (our calculation; 1,208,894 in English and 1,211,701 in math tested).

For grades 6–8, the standing among California middle schools is in Tests ↓

Overview

Is Twin Ridges Home Study Charter a good elementary school?

Needs Support. Twin Ridges Home Study Charter is higher than most California elementary schools on attendance. Twin Ridges Home Study Charter is lower than most on test results and progress in both subjects.

Test results, spring 2026

English, Proficient or Advanced2431%
Math, Proficient or Advanced916%
English, Advanced2511%
Math, Advanced63%

Progress in a year, 2025

English47+2 pts
Math13−11 pts

Showing up, 2025–26

Attendance932 in 100
Twin Ridges Home Study Charter’s place among California elementary schools, out of 100Nevada County Office of Education’s other elementary schoolsBar colour, from the lowest quarter of schools to the highest

Each bar is Twin Ridges Home Study Charter’s place among 5,726 California public elementary schools we score. Our calculation from California Department of Education records, updated October 15, 2026.

How to read these bars, and their sources

A place counts the schools out of 100 with a lower figure. The dashed line is the middle. Test results are from spring 2026, grades 3–5. Progress is the state’s measure of how the same students’ scores changed against the score it expected, 2025. Attendance counts students who missed 10% or more of school days; fewer is better, so a higher place means fewer such students.

In its own words

What does Twin Ridges Home Study Charter say about itself?

We haven’t read Twin Ridges Home Study Charter’s website yet. Until we do, the school’s own site is the best place to hear it in its own words.

Open trhs.us (opens in a new tab)

Progress

Did students here score higher than students who started at the same place?

In English, about the same. In math, lower. In 2025, students here in grades 4–7 scored 2 points higher in English than California students who had the same score the year before. The state calls that Average. In math, they scored 11 points lower, which the state calls Moderate.

English

+2

points higher than California students who had the same score a year earlier. The state calls it Average, the third of its five growth levels.

By student group · students counted

White54+2 points
Low-income34+4 points
Students with disabilities14−14 points

Math

−11

points lower than California students who had the same score a year earlier. The state calls it Moderate, the second of its five growth levels.

By student group · students counted

White53−14 points
Low-income34−10 points
Students with disabilities14−18 points

Grades 4–7, 2025, 66 students in English, 65 in math with scores in both years. Faded rows have fewer than 40 students. It describes results, not causes. Source: California Department of Education, growth model.

How the state’s growth measure works

The state calls this comparison an expected score. It sets one for each student from that student’s own score the year before.

California uses each student’s English and math scores from the year before to set an expected score, based on how students with similar earlier scores did across the state. Zero would mean students here scored as expected. In English they scored 2 points above that expected score, and in math 11 points below it.

The state sorts every school’s growth result into five growth levels, from Minimal to Exceptional.

Here, as at most schools, the state’s figure blends the two most recent years, so it moves more slowly than one year’s scores.

Nearby

How does it compare with schools nearby?

3 of the 3 elementary schools nearby have a higher Scope Score than Twin Ridges Home Study Charter. Each school is compared with every California elementary school.

Scope Score

4 elementary schools within 3.9 miles, highest score first. Under each name is how the school takes students.

  1. Grass Valley CharterCharter · its own lotteryScope Score 7757th
  2. Union HillCharter · its own lotteryScope Score 7656th
  3. Yuba River CharterCharter · its own lotteryScope Score 7336th
  4. Twin Ridges Home Study CharterScope Score 7021st
Nevada County Office of EducationCharter

A charter school takes applications from any family and holds a lottery when it has more applicants than seats.

Scope Score from California Department of Education state tests (CAASPP), spring 2026, grades 3–5. Distance is a straight line from this campus and is not an attendance boundary. See these schools on the map

Scores and family income

Further right, more students are from low-income families. Higher up, more students scored Proficient or Advanced in English.

25%50%0%25%50%75%100%

English results: California Department of Education state tests (CAASPP), spring 2026, grades 3–5. Low-income is the share of students who qualified for free or reduced-price meals, 2024–25. The chart compares results, not causes.

Schools like it

How does Twin Ridges Home Study Charter compare with schools like it?

Twin Ridges Home Study Charter’s Scope Score is 70. 595 California elementary schools, counting Twin Ridges Home Study Charter, have a similar share of students from low-income families. Their typical score is 78. Twin Ridges Home Study Charter’s result is higher than 33 of them.

The five schools with the highest results of the 595

  1. Students from low-income families: 51%

    Scope Score 97Strong · 99th percentile

  2. Students from low-income families: 51%

    Scope Score 95Strong · 98th percentile

  3. Students from low-income families: 52%

    Wedgeworth Elementary

    Hacienda Heights

    Scope Score 94Strong · 98th percentile

  4. Students from low-income families: 48%

    Scope Score 93Strong · 97th percentile

  5. Students from low-income families: 47%

    Scope Score 93Strong · 97th percentile

595 California public elementary schools where 42% to 54% of students qualified for free or reduced-price meals in 2024–25. The chart compares results, not causes. Our calculation from California Department of Education records, spring 2026.

How the group is chosen

The group is every California public elementary school we score where 42% to 54% of students qualified for free or reduced-price meals in 2024–25. That is within 6 points of Twin Ridges Home Study Charter’s share. The count includes Twin Ridges Home Study Charter. Typical means the median: half are higher and half are lower. Schools differ in more than family income, and no score is changed for it. Our calculation from California Department of Education records: state tests (CAASPP), spring 2026, and school meal eligibility, 2024–25.

Over time

Have results changed?

English results were similar to 2025; math results were lower. English went from 34% to 31% and math from 22% to 16%.

Share at the state’s top two test levels, 2019 to 2026

Grades 3–5. Point at a year, tap it or use the arrow keys to read its figures.

English

No comparable testsNo tests25%50%75%20192022202320242025202645%39%46%CaliforniaCalifornia42%Nevada County Office of EducationDistrict31%Twin Ridges Home Study CharterThis school

Math

No comparable testsNo tests25%50%75%20192022202320242025202631%21%42%CaliforniaCalifornia25%Nevada County Office of EducationDistrict16%Twin Ridges Home Study CharterThis school

The lines break where a year has no comparable state test results. Each spring tests a different group of students. Nevada County Office of Education’s line combines its 4 elementary schools we score (our calculation). Faint lines are its other schools. Source: California Department of Education, state tests (CAASPP).

Each year’s results

The top two levels were called Met or Exceeded before 2026 and are called Proficient or Advanced now. Nevada County Office of Education’s figure weights each school by the students it tested.

English, grades 3–5: share at the top two levels
SpringTwin Ridges Home Study CharterNevada County Office of EducationCaliforniaTested here
201939%45%50%54
202246%54%45%48
202345%49%44%65
202438%46%45%69
202534%43%46%67
202631%42%46%62
Math, grades 3–5: share at the top two levels
SpringTwin Ridges Home Study CharterNevada County Office of EducationCaliforniaTested here
201921%31%44%53
202235%42%38%49
202330%39%40%63
202430%34%41%70
202522%32%41%67
202616%25%42%62

Tests

How did students here do on state tests?

Well below California in both subjects.

English

31%

scored Proficient or Advanced.

50192011
Nevada County Office of Education42%California46%

Math

16%

scored Proficient or Advanced.

533113
Nevada County Office of Education25%California42%
MinimalDeveloping levelProficientAdvanced

In grades 3–5, spring 2026, 31% scored Proficient or Advanced in English and 16% in math, against 46% and 42% across California.

The state published these results on October 15, 2026. What changed across California. Spring 2026, grades 3–5 combined. From spring 2026, the state calls its top two levels “Proficient or Advanced” (formerly “Met or Exceeded”). Source: California Department of Education, state tests (CAASPP).

How does math compare with English?

In grades 3–5, spring 2026, math trails English by 15 percentage points in the share who scored Proficient or Advanced, against 4 points across California. The grades 3–5 cards above give each subject’s share.

How do the middle grades do?

Below California in English; well below it in math. In grades 6 and 7, spring 2026, 40% scored Proficient or Advanced in English and 15% in math, against 49% and 37% across California. The middle grades are placed separately: 31st percentile (Developing) among California’s middle schools.

English

40%

scored Proficient or Advanced.

342634
Nevada County Office of Education54%California49%

Math

15%

scored Proficient or Advanced.

602578
Nevada County Office of Education29%California37%
Results for each grade, spring 2026

What each level means: California's level descriptions.

English

English, grades 3–5: share of students tested, spring 2026
MeasureGrade 3Grade 4Grade 5
Proficient or Advanced27%22%41%
Advanced9%6%18%
Proficient18%16%23%
Developing level32%6%18%
Minimal41%72%41%
Tested221822
California44%46%49%
Difference−17−24−8
English, grades 6–8: share of students tested, spring 2026
MeasureGrade 6Grade 7Grade 8
Proficient or Advanced32%53%suppressed
Advanced3%11%suppressed
Proficient29%42%suppressed
Developing level27%26%suppressed
Minimal41%21%suppressed
Tested34198
California48%51%49%
Difference−16+2—

California is CDE’s statewide English row for each grade, counting every student tested there; the comparisons in the chapters combine these rows for their grades, weighted by students tested (our calculation).

Math

Math, grades 3–5: share of students tested, spring 2026
MeasureGrade 3Grade 4Grade 5
Proficient or Advanced9%28%14%
Advanced0%6%5%
Proficient9%22%9%
Developing level36%28%27%
Minimal55%44%59%
Tested221822
California47%42%37%
Difference−38−14−23
Math, grades 6–8: share of students tested, spring 2026
MeasureGrade 6Grade 7Grade 8
Proficient or Advanced15%16%suppressed
Advanced12%0%suppressed
Proficient3%16%suppressed
Developing level20%31%suppressed
Minimal65%53%suppressed
Tested34198
California37%38%36%
Difference−22−22—

California is CDE’s statewide math row for each grade, counting every student tested there; the comparisons in the chapters combine these rows for their grades, weighted by students tested (our calculation).

A grade the school doesn't teach has no row. “Suppressed” marks a result CDE blanks because fewer than 11 students tested (CDE’s reporting rule); “none tested” marks a grade CDE lists with no students tested; “not on file” marks a result missing from the records we hold. None of them means zero.

All four test levels, with the number of students tested
Share of students tested at each level, spring 2026. The state’s test levels Advanced, Proficient, the Developing level (formerly Nearly met) and Minimal.
StudentsAdvancedProficientDeveloping levelMinimalTested
English, grades 3–5 · This school11%20%19%50%62
English, grades 3–5 · California24%22%21%33%1,208,894
English, grades 3–5 · Nevada County Office of Education17%25%29%29%457
Math, grades 3–5 · This school3%13%31%53%62
Math, grades 3–5 · California21%21%25%33%1,211,701
Math, grades 3–5 · Nevada County Office of Education8%17%32%43%454
English, grades 6 and 7 · This school6%34%26%34%53
English, grades 6 and 7 · California19%30%23%28%832,685
English, grades 6 and 7 · Nevada County Office of Education15%39%25%21%370
Math, grades 6 and 7 · This school8%7%25%60%53
Math, grades 6 and 7 · California21%16%24%39%833,328
Math, grades 6 and 7 · Nevada County Office of Education13%16%31%40%368

Spring 2026, grades 3–5 combined: 62 tested in English, 62 tested in math. California combines the state’s results for the same grades, weighted by students tested (our calculation).

Who goes here

Who goes here?

White students are the largest group here, at 80% of students. 7 of 304 students missed 10% or more of school days.

Missing school, 2025–26

2in 100

students were chronically absent. That means they missed 10% or more of school days (7 of 304 students).

At the average Nevada County Office of Education elementary school: 9 in 100. At the average California elementary school: 17 in 100.

Students, 2024–25

208

students in grades TK–8.

White 80%Hispanic or Latino 10%Two or more races 4%

Family income

48%

of students qualified for free or reduced-price meals in 2024–25, 100 of 208. California: 63%.

Teachers, 2024–25

13

teachers, with 9 years of experience on average.

0% were in their first year.

100% of teaching positions had the right credential, 2021–22.

Suspensions, 2025–26

0

students were suspended at least once. Average California elementary school 1.6%.

Sources: California Department of Education. Each tile names its year.

Missing school, by grade
Grades 4–6
1 in 100 students in grades 4–6 were chronically absent (1 of 101).
Grades 7–8
4 of 40 students in grades 7–8 were chronically absent.

Our records hold no figure for Grades TK–3.

Full student mix, 2025–26
StudentsHere
White80%
Hispanic or Latino10%
Two or more races4%
Asian—
Black or African American—
Filipino—
American Indian or Alaska Native—
Pacific Islander—
Not reported—
Where these figures come from

Attendance and suspensions: California Department of Education, 2025–26. Student mix: the students the state’s attendance file counts, 2025–26; a dash means our records hold no count. Student count: California Department of Education enrollment, 2024–25. Teachers: California Department of Education staffing files, 2024–25.

Teaching credentials: California’s School Accountability Report Card, 2024–25, measured in 2021–22: 9.1 of 9.1 full-time teaching positions. It counts positions, not individual teachers.

Student groups

How do kids like mine do here?

Low-income students scored well below the same group across California in math.

This schoolThe same group, California
  • Low-incomeEnglish · 36 tested28%California 39%
  • Low-incomeMath · 36 tested11%California 26%
  • WhiteEnglish · 96 tested35%California 60%
  • WhiteMath · 96 tested16%California 53%

11% of low-income students scored Proficient or Advanced in math (grades 3–7, spring 2026), against 26% for the same group across California. White students scored well below the same group across California in English and math.

Share who scored Proficient or Advanced, grades 3–7, spring 2026. Each group is compared with the same group in the same grades. Source: California Department of Education, state tests (CAASPP).

Every group’s results, with the district

Low-income is the state’s “socioeconomically disadvantaged” group.

Proficient or Advancedgrades 3–7 · spring 2026
Group and subjectHerevs Nevada County Office of Educationvs California
Low-income · 36 tested · grades 6 and 7 only
English28%+226%−1139%
Math11%−213%−1526%
White · 96 tested
English35%+233%−2560%
Math16%−319%−3753%

Each gap is to the same group, grades and subject: in Nevada County Office of Education, and across California. No group that is behind across California does 10 or more points better here.

No published rate here for Hispanic or Latino, Asian, Black or African American, Filipino, American Indian or Alaska Native, Pacific Islander, homeless and military-family students, students of two or more races, English learners, students with disabilities and foster youth. That can reflect privacy rules or small numbers; it isn’t evidence of a gap. This table covers groups by income, race or ethnicity, language and disability; girls and boys aren’t split out.

Family and staff answers

What would families and staff tell you?

Families can answer a short set of questions about Twin Ridges Home Study Charter. These are not star ratings or reviews.

  1. Family answers show once 20 families have answered.Until then this page shows how many have answered.
  2. The questions are about the school, never a person.No question asks about a named teacher or staff member.
  3. Answers are never part of the Scope Score.They sit beside the state’s records and do not change a school’s score.

Families

No family answers yet

0 of 20 needed before answers show

  • Does the school tell you how your child is doing, in a way you understand, before report cards arrive?Usually · Sometimes · Rarely
  • When you contact the school with a question, do you hear back within two school days?Usually · Sometimes · Rarely · Haven’t contacted them
  • Can you get school information in the language you read best?Yes · Mostly · No
  • And 4 more questions.

Answer the family questionsResponder en españolHow family answers work

Staff

Staff can’t answer for this school yet

We don’t check staff emails for Nevada County Office of Education yet. Tell us your district’s email domain and we’ll work on adding it.

Ask us to add your district

The school day

What is the school day like?

Twin Ridges Home Study Charter has transitional kindergarten (TK). Our records do not hold school hours or before- and after-school care yet. Ask the office.

Transitional kindergarten (TK), 2025–26

21

TK students in 2025–26.

TK is California’s free public program for four-year-olds.

TK count: California Department of Education, Census Day enrollment, 2025–26. Find TK schools near you

Money

How much is spent on each student here?

$13,676 for each student in 2024–25. California’s elementary schools spent $20,288 for each student.

$13,676

for each student at this school, 2024–25
Spent at the school
$13,676
The school’s share of district office costs
$0
Of the total, from federal funds
$189
  • Twin Ridges Home Study Charter$13,676
  • Nevada County Office of Education elementary schools$14,866
  • California elementary schools$20,288

The district and California figures combine their elementary schools, weighted by enrollment (our calculation, 5,053 California schools). Spending does not show how well money is used. Source: California Department of Education, per-school spending report, 2024–25. Funding records ↓

The neighborhood

What is the area around Twin Ridges Home Study Charter like?

These figures are for everyone who lives in ZIP code 95959. They are not figures for the families at Twin Ridges Home Study Charter.

Typical household income in a year

$86,524

Typical means half are higher and half are lower. The ZIP code is the school’s address, not its attendance area. Source: U.S. Census Bureau, American Community Survey, 2020–2024, ZIP code area 95959.

Typical home value
$627,100
People who live in this ZIP code
17,683
Typical age
56.0 years
Adults 25 and older with a four-year college degree
47%

What you can do

Who can act on Twin Ridges Home Study Charter’s results?

Twin Ridges Home Study Charter’s own board decides its plan.

State support

The state hasn’t placed Twin Ridges Home Study Charter in a support program. Federal designation under the Every Student Succeeds Act, 2025–26. Source 

Reading screening in kindergarten through grade 2

California law requires schools to screen kindergartners through second graders for reading difficulties every year, with some exceptions. You get notice at least 15 days before, results within 45 days, and can opt out in writing.

Kindergartners can’t be screened before the 91st school day; transitional kindergarten isn’t covered.

If screening shows your child may be at risk for reading difficulties, the school must provide supports. That result isn’t a diagnosis, and screening can’t be used to delay a special-education evaluation.

Ask how many K–2 students screening found at risk last year, and how many got extra reading help.

California Education Code § 53008. Source 

Questions to ask

What should I ask, and when?

Bring these 5 questions to Twin Ridges Home Study Charter. Confirm anything about applying with the school itself.

On a tour

  1. What changes for a student who falls behind in math?11 points lower in math than California students who had the same score the year before, grades 4–7, 2025 (65 students)

Before you apply

  1. Which grades are accepting applications, and who is eligible?
  2. What are the deadlines, enrollment priorities, and lottery or waitlist steps?

At the office

  1. What time does the day start and end, and is any day shorter?
  2. What transportation and before- or after-school options are available?

Getting in

What comes after Twin Ridges Home Study Charter, and how do I get in?

Ask Twin Ridges Home Study Charter how it admits students. Charter schools set their own enrollment steps and dates. No assigned next school.

Twin Ridges Home Study Charter is a charter, so a student’s later schools follow the family’s home address, not this campus, unless the family applies elsewhere. Each school’s standing compares it with California schools at its own level.

  1. Grades TK–8 · this school
    Twin Ridges Home Study Charter
    Scope Score 70Needs Support · 21st percentile
  2. High
    Forest Charter
    Scope Score 70Needs Support · 24th percentile · 2025Nearby same-district option · distance estimate, not a confirmed feeder · Charter school. Check how it admits students.

These links come from past records and from distance. Confirm your child’s school with the district. Explore schools on the map

All recorded links and nearby alternatives

High-school links

  • Forest Charter

    Nearby same-district option · distance estimate, not a confirmed feeder · Charter school. Check how it admits students.

    Scope Score 70 · Needs Support · 24th percentile · high · 2025

Links do not guarantee placement. Charter, magnet, transfer and other admission routes can differ. Each school’s percentile compares it with California schools at its own level (continuation and alternative schools only with their own kind); the stages are not one ranking.

Where the path ends: Forest Charter
Forest CharterScope Score 70 · Needs Support · 24th percentile · 2025estimated path

The road from this school ends at Forest Charter. The AP Course Audit lists 3 AP courses its teachers are authorized to teach in 2025–26. That figure comes from dated records. A child starting here today would reach Forest Charter around 2036, and a school can change a lot in 10 years. By the state’s 2023 count, 53% of the students who finished high school at Forest Charter enrolled in college within 12 months, UC or not.

3 authorized AP courses (AP Course Audit 2025–26) → full record on Forest Charter's page
Source: College Board AP Course Ledger

Where it is

Where is Twin Ridges Home Study Charter?

Address
111 New Mohawk Road, Nevada City 95959Get directions (opens Google Maps in a new tab)
Administrator
Jennifer DearduffAs the state’s school directory lists it, last updated September 23, 2020.

A school’s place on the map is its address in the state directory. It does not show which homes the school serves. See nearby schools on the map

Short answers to 7 common questions

How do I get in?

Ask Twin Ridges Home Study Charter how it admits students. Charter schools set their own enrollment steps and dates. See the details ↓

Is Twin Ridges Home Study Charter a good school?

Twin Ridges Home Study Charter has a Scope Score of 70. It scored higher than 21 in 100 of California’s 5,726 scored public elementary schools (Needs Support, 21st percentile, spring 2026).

  • Grades 6–8: higher than 31 in 100 California middle schools we score (31st percentile, Developing, spring 2026)

See the details ↓

How often do students miss school or get suspended?

In 2025–26, 2 in 100 students missed 10% or more of school days, against 9 in 100 at the average Nevada County Office of Education elementary school. 0 of 309 students were suspended at least once in 2025–26, against 1.6% at the average California elementary school. See the details ↓

Did students here score higher than students who started at the same place?

In English, about the same. In math, lower. In 2025, students here in grades 4–7 scored 2 points higher in English than California students who had the same score the year before. The state calls that Average. In math, they scored 11 points lower, which the state calls Moderate.

  • Included in this measure: 66 students in English, 65 in math

See the details ↓

How do kids like mine do here?

In spring 2026, 28% of low-income students in grades 6 and 7 at Twin Ridges Home Study Charter in Nevada City scored Proficient or Advanced in English, against 39% for the same group across California. See the details ↓

What does its own plan pay for?

In its 2026–27 plan, $298,427 is planned for 10 funded actions in 3 goals. That’s 9% of its $3.5 million general fund budget. These are planned amounts; the charter school reports what it spent in a later plan.

What should I ask on a visit?

The questions drawn from this page are under Questions to ask, ready to copy. See the details ↓

Its own plan

What does Twin Ridges Home Study Charter’s own plan commit to?

$298,427 is planned for 10 funded actions in 3 goals. That’s 9% of its $3.5 million general fund budget.

$298,427

planned in the school’s own plan for 2026–27

The three largest actions in the plan

  • Optional Enrichment Classes$127,311
  • Tutoring Opportunities$90,719
  • Social Outing Opportunities$37,883

These are planned amounts; the charter school reports what it spent in a later plan. Source: the charter school’s yearly spending plan (Local Control and Accountability Plan, or LCAP, 77 pages), as posted to the California School Dashboard.

The whole plan: every goal, what it measures and what it pays for

The plan lists what the school commits to spend and measure.

The 2026–27 plan in short

Source: the charter school’s yearly spending plan (Local Control and Accountability Plan, or LCAP, 77 pages), as posted to the California School Dashboard.

Where the money goes

Three actions take 86% of the money. The plan itself puts 29% of it toward staff.

  • Optional Enrichment Classes $127,311
  • Tutoring Opportunities $90,719
  • Social Outing Opportunities $37,883
  • 7 other actions
Reading, math and catch-up help

2 of the plan’s 10 funded actions name reading, math, catch-up help or English learners in their titles.

  • Catch-up help $100,719

Largest of these

  • Tutoring Opportunities$90,719
  • Intervention Materials$10,000
For high-need students

It plans $283,476 in extra services for English learners, low-income students and foster youth. For 2025–26, it planned $187,163 and estimates it spent $303,210, $116,047 (62%) more than planned (our arithmetic).

What changed

The total is $84,987 (40%) higher than in the 2025–26 plan. The biggest change in dollars is Optional Enrichment Classes, which went from $85,075 to $127,311.

Largest cuts

  • Intervention Materials−⁠$2,000
  • Parent Trainings−⁠$1,500

Largest increases

  • Optional Enrichment Classes+⁠$42,236
  • Tutoring Opportunities+⁠$36,448
  • Social Outing Opportunities+⁠$7,866
What its goals measure

Read these state results for this school as context for the goals they measure; results alone can’t show what the plan caused.

The test rows are schoolwide results for every grade the school tests; the source doesn’t list which grades. The headline at the top of this page covers grades 3–5 only: 31% in English and 16% in math, spring 2026.

What its goals measure: state results, 2024–25 and 2025–26
Measure2024–252025–26Change
Chronically absentGoal 39 in 1002 in 1007 fewer in 100
Suspended at least onceGoal 30 of 2680 of 309no change

Goals 1 and 2 aren’t shown because they track other measures.

Figures from CDE’s state test, chronic absence and suspension files. Test figures cover every grade the school tests (California tests grades 3–8 and 11), so they differ from a profile’s rated grades. Chronically absent means a student missed 10% or more of school days.

The plan’s own titles and amounts
  • Optional Enrichment Classes · $127,311
  • Tutoring Opportunities · $90,719
  • Social Outing Opportunities · $37,883
The full plan3 goals, 20 measures and where the money goes

We calculate each action’s share of the plan by dividing its planned amount by the total of the plan’s funded actions ($298,427).

Where does the money go?

82% to Goal 1. Each box is one action, sized by its planned dollars and coloured by its change since last year’s plan. Tap a box to open its goal.

G1
G2

Change since the 2025–26 plan, same title

  • fell 25% or more
  • fell 10–25%
  • fell 2–10%
  • within 2%
  • grew 2–10%
  • grew 10–25%
  • grew 25% or more
  • new or renamed title
  • not compared: unconfirmed, or repeated across goals

Every goal, in the plan’s order

Goal 1By implementing these strategies and monitoring progress through the metrics of priorities four and eight, we…$245,33082% of action budgets

“By implementing these strategies and monitoring progress through the metrics of priorities four and eight, we aim to Improve student achievement and performance outcomes through focused intervention and a robust framework of strategic supports” p. 16 ↗

6 funded actions · 2025–26 plan: $170,146 (+⁠$75,184)

Largest funded actions

  1. Optional Enrichment Classes$127,311action 1.1 · p. 39 ↗ · marked as contributing to high-need services
  2. Tutoring Opportunities$90,719action 1.2 · p. 39 ↗ · marked as contributing to high-need services · of which $76,045 is state funding counted toward those services
  3. Academic Data Analysis$12,500action 1.7 · p. 39 ↗ · marked as contributing to high-need services
  4. Intervention Materials$10,000action 1.4 · p. 39 ↗ · marked as contributing to high-need services
  5. Parent Trainings$3,800action 1.6 · p. 39 ↗ · marked as contributing to high-need services

1 more funded action in this goal

  • Chromebooks · action 1.3 · p. 39 ↗ · marked as contributing to high-need services$1,000

Changes from last year’s plan, same title

  1. Optional Enrichment Classes+⁠$42,236$85,075 → $127,311 · p. 39 ↗
  2. Tutoring Opportunities+⁠$36,448$54,271 → $90,719 · p. 39 ↗
  3. Intervention Materials−⁠$2,000$12,000 → $10,000 · p. 39 ↗

Every other line in this goal, against last year’s plan

  • Academic Data Analysis · $12,500 → $12,500 · p. 39 ↗unchanged
  • Parent Trainings · $5,300 → $3,800 · p. 39 ↗−⁠$1,500
  • Chromebooks · $1,000 → $1,000 · p. 39 ↗unchanged

How the plan measures it · 5 measures

None of these has an all-students line we can quote; the plan’s table lists them from p. 16 ↗.

Goal 2Create and maintain a safe, inclusive and conducive learning environment that supports the academic, social…$49,88317% of action budgets

“Create and maintain a safe, inclusive and conducive learning environment that supports the academic, social and emotional development of all students” p. 24 ↗

2 funded actions · 2025–26 plan: $42,017 (+⁠$7,866)

Largest funded actions

  1. Social Outing Opportunities$37,883action 2.3 · p. 40 ↗ · marked as contributing to high-need services
  2. Student Counseling Services$12,000action 2.2 · p. 39 ↗ · marked as contributing to high-need services

Changes from last year’s plan, same title

  1. Social Outing Opportunities+⁠$7,866$30,017 → $37,883 · p. 40 ↗

Every other line in this goal, against last year’s plan

  • Student Counseling Services · $12,000 → $12,000 · p. 39 ↗unchanged

How the plan measures it · 7 measures · 2 quoted

  • Priority 1: Appropriately Assigned and Fully Credentialed Teachers p. 25 ↗
    Baseline
    100% of TRHS Supervising Teachers are appropriately assigned and fully credentialed.
    Target for year 3
    100% of TRHS Supervising Teachers are appropriately assigned and fully credentialed.
  • Number of Students Accessing Counseling Services p. 26 ↗
    Baseline
    18 students utilized TRHS Counseling Services
    Target for year 3
    21 students utilized TRHS Counseling Services

5 more measures in the plan’s table.

Goal 3Increase meaningful engagement and collaboration among students, families, staff, and community stakeholders…$3,2141% of action budgets

“Increase meaningful engagement and collaboration among students, families, staff, and community stakeholders to promote student success, strengthen school-community partnerships, and enhance the overall school climate and experience” p. 28 ↗

2 funded actions · 2025–26 plan: $1,277 (+⁠$1,937)

Largest funded actions

  1. Implement Community Service Program$2,937action 3.3 · p. 40 ↗ · marked as contributing to high-need services
  2. Survey Implementation$277action 3.4 · p. 40 ↗

Changes from last year’s plan, same title

  1. Implement Community Service Program+⁠$1,937$1,000 → $2,937 · p. 40 ↗

Every other line in this goal, against last year’s plan

  • Survey Implementation · $277 → $277 · p. 40 ↗unchanged

How the plan measures it · 8 measures

None of these has an all-students line we can quote; the plan’s table lists them from p. 28 ↗.

All amounts are planned. We read them from the PDF and added up each goal’s actions ourselves. Page links open the plan at that page.

The full record

Source records

This page is built from 12 sets of records from public data sources. Every figure keeps its source, grades, year and count.

Data updated

October 15, 2026

Record sets on this page
12
Sources
California Department of EducationU.S. Census Bureau
State test years
2017–2026

Results

Students

Money and staff

Place, downloads and method

Score factorssource values, index and weights · 2025–26 · ranked #4,517 of 5,726 California elementary schools we score · #4 of 4 in Nevada County Office of Education
Score factors, 2025–26
FactorSchoolIndexWeight
Advancedaverage of English and math7%3642%
Proficient or Advancedaverage of English and math24%3523%
Chronically absent2 in 100695%
Suspension rate0 of 309615%
Grade gap (G3→G5, different students)+9.1pp—not scored

Index is where the school's value sits among the California elementary schools we score, from 0 to 100, where 50 is their average; it is not a percentile. School values are from 2025–26. Chronic absence and suspension are CDE's all-students school rates; the score uses an adjusted version of each that pulls small schools toward the average, so their index can sit nearer 50 than the rate suggests. The weights above add to 75%: the remaining 25%, for measures with no value here, is shared out among the measures above.

Scope Score by year2018–19 to 2025–26 · each year’s inputs, and the score for each year we could verify

Scope Score

School yearScope ScorePercentileRankComparison group
2025–267021#4517California elementary schools · 5,726 schools · current formula

2018–19, 2021–22, 2022–23, 2023–24 and 2024–25 have records on file but no Scope Score we could verify against that year’s source files, so no score is shown for them.

School yearChronic absenceSuspensionGrade gap (points)
2018–190 in 1000 of 170−14
2021–22not on filenot on file+7
2022–23not on filenot on file−3
2023–244 in 1000 of 257−14
2024–259 in 1000 of 268−3
2025–262 in 1000 of 309+9

Chronic absence and suspension are CDE’s all-students school rates for each year.

Grade gap: the same year’s grade 3 and grade 5 results, side by side. They are different children, so the gap describes one year, not any child’s progress. The Scope Score’s growth measure is a different comparison, shown in Score factors above (how it’s built).
No 2019–20 or 2020–21 records in this SchoolScope series
Every tested year2017–2026 · rates, tested counts, and each grade

English and math by test year · all tested grades

Year · subjectStudents with scoresTop levelTop two levels
2026 · English1239%36%
2026 · Math1236%16%
2025 · English1088%38%
2025 · Math1076%22%
2024 · English12712%38%
2024 · Math12610%28%
2023 · English11718%42%
2023 · Math11611%30%
2022 · English9622%46%
2022 · Math9718%33%
2019 · English8312%41%
2019 · Math824%20%
2018 · English6013%47%
2018 · Math600%20%
2017 · English4122%59%
2017 · Math417%27%

Each year names its school year end (2026 = 2025–26). “Students with scores” counts each subject on its own, so don’t add the English and math counts together. A dash is unavailable, not zero.

Earlier years · grade and subject

Year · grade · subjectStudents with scoresMet or exceeded
2025 · Grade 3 · English1926%
2025 · Grade 4 · English1839%
2025 · Grade 5 · English3037%
2025 · Grade 6 · English1921%
2025 · Grade 7 · English1362%
2025 · Grade 8 · English9—
2025 · Grade 3 · Math1926%
2025 · Grade 4 · Math1839%
2025 · Grade 5 · Math3010%
2025 · Grade 6 · Math1811%
2025 · Grade 7 · Math1331%
2025 · Grade 8 · Math9—
2024 · Grade 3 · English1735%
2024 · Grade 4 · English3444%
2024 · Grade 5 · English1828%
2024 · Grade 6 · English1953%
2024 · Grade 7 · English9—
2024 · Grade 8 · English3037%
2024 · Grade 3 · Math1735%
2024 · Grade 4 · Math3435%
2024 · Grade 5 · Math1916%
2024 · Grade 6 · Math1932%
2024 · Grade 7 · Math9—
2024 · Grade 8 · Math2825%
2023 · Grade 3 · English2650%
2023 · Grade 4 · English1729%
2023 · Grade 5 · English2250%
2023 · Grade 6 · English1233%
2023 · Grade 7 · English2744%
2023 · Grade 8 · English1331%
2023 · Grade 3 · Math2638%
2023 · Grade 4 · Math1612%
2023 · Grade 5 · Math2133%
2023 · Grade 6 · Math1225%
2023 · Grade 7 · Math2836%
2023 · Grade 8 · Math1323%
2022 · Grade 3 · English1638%
2022 · Grade 4 · English2148%
2022 · Grade 5 · English1155%
2022 · Grade 6 · English2438%
2022 · Grade 7 · English1669%
2022 · Grade 8 · English8—
2022 · Grade 3 · Math1631%
2022 · Grade 4 · Math2241%
2022 · Grade 5 · Math1127%
2022 · Grade 6 · Math2313%
2022 · Grade 7 · Math1656%
2022 · Grade 8 · Math9—
2019 · Grade 3 · English2245%
2019 · Grade 4 · English2040%
2019 · Grade 5 · English1225%
2019 · Grade 6 · English8—
2019 · Grade 7 · English1436%
2019 · Grade 8 · English7—
2019 · Grade 3 · Math2124%
2019 · Grade 4 · Math2020%
2019 · Grade 5 · Math1217%
2019 · Grade 6 · Math8—
2019 · Grade 7 · Math1414%
2019 · Grade 8 · Math7—
2018 · Grade 3 · English2045%
2018 · Grade 4 · English1346%
2018 · Grade 5 · English——
2018 · Grade 6 · English——
2018 · Grade 7 · English——
2018 · Grade 8 · English——
2018 · Grade 3 · Math2020%
2018 · Grade 4 · Math1331%
2018 · Grade 5 · Math——
2018 · Grade 6 · Math——
2018 · Grade 7 · Math——
2018 · Grade 8 · Math——
2017 · Grade 3 · English——
2017 · Grade 4 · English——
2017 · Grade 5 · English——
2017 · Grade 6 · English——
2017 · Grade 7 · English——
2017 · Grade 8 · English——
2017 · Grade 3 · Math——
2017 · Grade 4 · Math——
2017 · Grade 5 · Math——
2017 · Grade 6 · Math——
2017 · Grade 7 · Math——
2017 · Grade 8 · Math——

Current 2025–26 grade results are under Academic achievement, in Results for each grade. “Students with scores” counts the students tested in that grade, subject and year. A missing result is not zero, and each year’s row is a different group of children.

Science (CAST)schoolwide · spring 2026
Science (CAST)TestedAdvancedProficientDeveloping levelMinimal
Schoolwide3013%30%37%20%

CAST is tested in grades 5 and 8, then once in grade 10, 11, or 12. This row is the school's all-student aggregate. Not part of the Scope Score.

Student groups: test resultsEnglish · spring 2026 · against the same group in the district and California
Group · EnglishTestedProficient or Advancedvs districtvs California
Low-income (grades 6 and 7 only)3628%+2−11
White9635%+2−25
Student groups: the state’s growth measureCalifornia School Dashboard 2025 · points above or below what the state expected · shown, not part of the score
GroupEnglishnCDE categoryMathnCDE category
All students+266Average−1165Moderate
English-only students+365not categorized−1164not categorized
White+254Average−1453Moderate
Low-income+434Average−1034Moderate
Students with disabilities−1414Moderate−1814Moderate

CDE reports scale-score points against the state’s expected score — not a percentage or percentile. The table keeps the group records SchoolScope imported for this school, including rows below our narrative display threshold. Muted rows have fewer than 30 students with a valid growth score. SchoolScope uses that threshold for the shorter narrative view; the reported values stay visible here. “Not categorized” means this imported CDE row has a growth value without a performance category. At least one estimate here is a CDE weighted estimate; that describes how CDE combines years, not a year-over-year trend. A group absent from this table has no imported record shown here. Its absence alone does not establish its size or performance. CDE growth covers grades 4–8; here that is grades 4–7. SchoolScope does not use these CDE figures in its Scope Score.

Growth recordsthe state’s student-by-student measure
California growth model · points vs expected

State model · English+2 pts vs expected

matched students, grades 4–7

CDE California growth model · 2025 Dashboard

Weighted school estimate; assessments from 2022–23, 2023–24, and 2024–25

All students, grades 4–7

66 students

CDE growth category: Average

California growth model, English: +2 scale-score points versus the state's expectation, CDE category Average, against SchoolScope's +2-point median for California elementary school records.

State model · math−11 pts vs expected

matched students, grades 4–7

CDE California growth model · 2025 Dashboard

Weighted school estimate; assessments from 2022–23, 2023–24, and 2024–25

All students, grades 4–7

65 students

CDE growth category: Moderate

California growth model, math: −11 scale-score points versus the state's expectation, CDE category Moderate, against SchoolScope's +2-point median for California elementary school records.

Source notes. CDE reports scale-score points against the state’s expected score for matched students, never a percentage. Among SchoolScope's retained California elementary school records, the median English estimate is +2 and the middle half fall between −5 and +9 scale-score points — the spread is wide, so read the figure against it, not its sign alone. CDE's 2025 Dashboard weighted school estimate uses assessments from 2022–23, 2023–24, and 2024–25; adjacent reporting editions should not be read as independent annual changes. The CDE measure covers grades 4–8; here that is grades 4–7, and it is not part of the Scope Score.

Attendance and suspensionsState records · this school and each student group · 2018–19 and 2025–26

CDE’s all-students school rates for 2024–25 and 2025–26; the change is the difference between the two rates as printed.

Year-over-year school rates
Chronic absenteeism2024–25 · 9 in 100 → 2025–26 · 2 in 100 · −7 in 100
Suspension rate2024–25 · 0 of 268 → 2025–26 · 0 of 309 · 0.0 percentage points
Group2018–192025–26Change
Female0 of 924 in 100—
Male0 of 751 in 100—
Hispanic or Latino0 of 161 of 31—
Two or more races0 of 121 of 13—
White0 in 1002 in 100+2 in 100
Low-income0 of 883 in 100—
All students0 in 1002 in 100+2 in 100
Students with disabilities—1 of 31—

Two reported school years only; no intervening-year result is implied. Where fewer than 100 students were counted, the cell shows the count and no change is printed. Source: CDE school-level chronic absenteeism by student group.

Fundingschool and district spending, from state and federal finance records · each row names its fiscal year and measure

Per-pupil spending

District · current expense$18,834 per pupil

NCES F-33 · FY 2020–21 (2021) · fall district membership: 1,388 pupils

School-level federal expenditures$189 per pupil

CDE ESSA · school-attributed per-pupil record · FY 2024–25 (2025) · source denominator: 208

These figures are not directly comparable: school ESSA attributed spending and NCES district current expense use different measures and populations. Their fiscal years are labeled above.

Selected General Fund operating costs · FY 2024–⁠25 · SchoolScope calculation
Instruction 32%Instruction support 15%Student services 23%Administration 24%Buildings & maintenance 5%Other 1%
The arithmetic behind these shares · FY 2024–25
GroupDollarsShare, to two decimalsPrinted
Instruction$6,883,17932.35%32%
Instruction support$3,274,19015.39%15%
Student services$4,767,10022.40%23%
Administration$5,106,60424.00%24%
Buildings & maintenance$1,002,8604.71%5%
Other$243,5261.14%1%
Total$21,277,459100.00%100%

These shares are our arithmetic: each group’s dollars divided by the $21,277,459 total of the groups shown, rounded to whole percents by largest remainder so they add up to 100. Dollar amounts are rounded to the nearest dollar, so they can differ from the total by a dollar. SchoolScope groups district-level CDE SACS UserGL actuals from Fund 01, using operating objects 1000–5999 and excluding retiree benefits, food and community services, facilities acquisition, other outgo, and nonagency goals. These shares use that filtered total; they do not exactly break down CDE's official current expense per ADA above. The school-level ESSA figure uses a separate source.

NCES F-33 district fiscal-year history, 2017–⁠2021; latest district record shown: 2021
2021$18,834 per pupil
2020$18,638 per pupil
2019$19,170 per pupil
2018$8,133 per pupil
2017$7,527 per pupil

Source: NCES F-33 · Full district breakdown →

Staffing recordsstate teacher credential-and-placement and district salary records · each for its own year

Additional workforce records

Properly assigned intern credential holders0.0%

CDE 2024–25 SARC, Teacher Preparation and Placement table; measured school year 2021–22. Share of reported school teaching-position full-time equivalents assigned to properly assigned intern credential holders. A reported 0.0% is shown; unavailable rates are omitted. This is a position share, not a count of current teachers or of emergency permits.

The surrounding ZIP codeCensus Bureau survey, 2020–2024 · ZIP 95959 · not the school’s students
American Community Survey 5-year estimates · 2020–2024 · ZIP 95959 area
MeasureEstimate
Median household income$86,524
Bachelor's degree or higher (adults 25+)47%
ZIP-area population17,683
Median age56.0 years

Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates. Median household income covers the past 12 months and is reported in 2024 inflation-adjusted dollars. Bachelor's degree or higher uses adults age 25 and over as its population. A dash is unavailable, not zero; a reported zero remains zero. ZIP-area figures do not establish the school's attendance area or describe its enrolled students. These figures are not part of the Scope Score. See all schools in ZIP code 95959 →

Downloads, embed and methodologyCSV · embed code · sources · corrections

Embed this scorecard

<iframe
  src="https://schoolscope.co/embed/school/twin-ridges-home-study-charter-6227"
  width="100%" height="210" loading="lazy"
  style="border:0;border-radius:12px"
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Free to embed with the credit link. Data updates automatically.

Data sources: public data sources, including the California Department of Education · state tests (CAASPP) 2025–26 · Scope Score from 2025–26 results, compared across 5,726 elementary schools · attendance and suspensions by student group from 2018–19 and 2025–26 · district finance for the year each row names · Census survey (ACS) 2020–2024 · Data updated October 15, 2026

  • Its Scope Score is an elementary school score; results for its other grades are in these records.

How we analyzeRequest a correction