Public school · Acalanes Union High

Las Lomas High — Rating & test scores

1460 South Main Street, Walnut Creek · 1,577 students · Grades 9–12

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Campus map · © OpenStreetMap

Drawn from OpenStreetMap. 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 86

StrongScope Score · 87th percentile. Higher than 87 in 100 of the 1,498 California public high schools we score.

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

In 2024–25, 98% of the class graduated in four years (421 of 428); across California, 89%.

Source for this line
Source
CDE four-year adjusted cohort graduation rate (ACGR), 2024–25
Students
students who started 9th grade together: 428
Comparison
California: graduates divided by students who started 9th grade together, across 2,281 public schools’ rows (our combination, not CDE’s published state rate; 432,702 of 487,177).

Overview

Is Las Lomas a good high school?

Strong. Las Lomas is higher than most California high schools on test results and attendance.

From spring 2026, the state calls its top two levels “Proficient or Advanced” (formerly “Met or Exceeded”).

Test results, spring 2025

English, Proficient or Advanced7671%
Math, Proficient or Advanced9056%
English, Advanced8443%
Math, Advanced8930%

Showing up, 2024–25

Attendance7315 in 100
Las Lomas’s place among California high schools, out of 100Acalanes Union High’s other high schoolsBar colour, from the lowest quarter of schools to the highest

One more thing to know

In grade 11, spring 2026, 51% scored Proficient or Advanced in math, against 32% across California.

Each bar is Las Lomas’s place among 1,498 California public high 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 2025, grade 11, the latest year with a high school Scope Score. That year the state called these levels Met or exceeded and Exceeded. Attendance counts students who missed 10% or more of school days; fewer is better, so a higher place means fewer such students.

Source for the sentence
California’s state tests (CAASPP), California Department of Education, spring 2026. All students tested in grade 11. California: CDE’s grade 11 rows for the whole state combined, weighted by students tested (our calculation; 413,523 in math tested).

In its own words

What does Las Lomas say about itself?

We haven’t read Las Lomas’s website yet. Until we do, the school’s own site is the best place to hear it in its own words.

Open acalanes.k12.ca.us (opens in a new tab)

Nearby

How does it compare with schools nearby?

3 of the 6 high schools nearby have a higher Scope Score than Las Lomas. Each school is compared with every California high school.

Scope Score

7 high schools within 4.1 miles, highest score first. Under each name is how the school takes students.

  1. CampolindoNeighborhood school · by addressScope Score 9296th
  2. AcalanesNeighborhood school · by addressScope Score 9195th
  3. NorthgateMt. Diablo Unified · by addressScope Score 8688th
  4. Las LomasScope Score 8687th
  5. Horizons School: Independent StudySchool of choice · by applicationScope Score 6712th
  6. Acalanes Center for Independent StudySchool of choice · by applicationScope Score 6611th
  7. Ygnacio ValleyMt. Diablo Unified · by addressScope Score 647th
Acalanes Union HighA neighborhood school in another districtMagnet or school of choice

A neighborhood school in another district takes students who live in its area. Ask that district about a transfer. A magnet or other school of choice takes applications through its district.

Scope Score from California Department of Education state tests (CAASPP), spring 2025, grade 11. 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 met or exceeded the standard in English.

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

5 of 7 schools are named on the chart. Point at a dot or tap it to read any school.

English results: California Department of Education state tests (CAASPP), spring 2025, grade 11. 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 Las Lomas compare with schools like it?

Las Lomas’s Scope Score is 86. 81 California high schools, counting Las Lomas, have a similar share of students from low-income families. Their typical score is 88. Las Lomas’s result is higher than 30 of them.

The five schools with the highest results of the 81

  1. Students from low-income families: 11%

    Scope Score 99Strong · 99th percentile

  2. Students from low-income families: 21%

    Scope Score 97Strong · 98th percentile

  3. Students from low-income families: 21%

    Scope Score 97Strong · 98th percentile

  4. Students from low-income families: 12%

    Scope Score 96Strong · 98th percentile

  5. Students from low-income families: 12%

    Scope Score 96Strong · 98th percentile

81 California public high schools where 9% to 21% 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 2025.

How the group is chosen

The group is every California public high school we score where 9% to 21% of students qualified for free or reduced-price meals in 2024–25. That is within 6 points of Las Lomas’s share. The count includes Las Lomas. 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 2025, and school meal eligibility, 2024–25.

Over time

Have results changed?

English results were similar to 2025; math results were lower. English went from 71% to 67% and math from 56% to 51%.

Share at the state’s top two test levels, 2017 to 2026

Grade 11. Point at a year, tap it or use the arrow keys to read its figures.

English

No comparable testsNo tests25%50%75%2017201820192022202320242025202684%70%82%Acalanes Union HighDistrict67%Las LomasLas Lomas57%CaliforniaCalifornia

Math

No comparable testsNo tests25%50%75%2017201820192022202320242025202670%52%66%Acalanes Union HighDistrict51%Las LomasLas Lomas32%CaliforniaCalifornia

The lines break where a year has no comparable state test results. Each spring tests a different group of students. Acalanes Union High’s line combines its 5 high 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. Acalanes Union High’s figure weights each school by the students it tested.

English, grade 11: share at the top two levels
SpringLas LomasAcalanes Union HighCaliforniaTested here
201770%84%60%364
201877%82%56%346
201980%89%57%385
202268%78%55%371
202377%83%55%362
202473%82%56%421
202571%81%57%378
202667%82%57%382
Math, grade 11: share at the top two levels
SpringLas LomasAcalanes Union HighCaliforniaTested here
201752%70%32%352
201859%69%31%347
201958%72%32%375
202256%66%27%377
202354%65%27%364
202453%63%28%422
202556%65%30%379
202651%66%32%382

Tests

How did students here do on state tests?

Well above California in both subjects.

English

67%

scored Proficient or Advanced.

13202839
Acalanes Union High82%California57%

Math

51%

scored Proficient or Advanced.

27222328
Acalanes Union High66%California32%
MinimalDeveloping levelProficientAdvanced

In grade 11, spring 2026, 67% scored Proficient or Advanced in English and 51% in math, against 57% and 32% across California.

The state published these results on October 15, 2026. What changed across California. Spring 2026, grade 11 combined. Source: California Department of Education, state tests (CAASPP).

How does math compare with English?

In grade 11, spring 2026, math trails English by 16 percentage points in the share who scored Proficient or Advanced, against 25 points across California. The grade 11 cards above give each subject’s share.

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, grade 11 · This school39%28%20%13%382
English, grade 11 · California27%30%21%22%414,559
English, grade 11 · Acalanes Union High53%29%12%6%1,296
Math, grade 11 · This school28%23%22%27%382
Math, grade 11 · California16%16%20%48%413,523
Math, grade 11 · Acalanes Union High42%24%18%16%1,291

Spring 2026, grade 11 combined: 382 tested in English, 382 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 50% of students. 203 of 1,530 students missed 10% or more of school days.

Missing school, 2025–26

13in 100

students were chronically absent. That means they missed 10% or more of school days (203 of 1,530 students).

At the average high school in the Acalanes Union High district: 23 in 100. At the average California high school: 22 in 100.

Suspensions: 2.5% of students were suspended at least once (38 of 1,541). Average California high school 2.9%.

Students, 2024–25

1,577

students in grades 9–12.

White 50%Hispanic or Latino 17%Asian 14%Two or more races 10%Black or African American 3%Filipino 3%Not reported 2%

Family income

15%

of students qualified for free or reduced-price meals in 2024–25, 243 of 1,577. California: 63%.

Teachers, 2024–25

87

teachers, with 13 years of experience on average.

1% were in their first year.

89% of teaching positions had the right credential, 2021–22.

English learners

50%

of English learners moved up at least one level on the state’s English test (ELPAC), or stayed at the top, spring 2025 to spring 2026 (45 of 90 students).

Acalanes Union High: 49%. California: 47%.

It counts students moving up the test’s levels, so a student can count here before becoming fluent. Sources: California Department of Education and the California School Dashboard. Each tile names its year.

Full student mix, 2025–26
StudentsHere
White50%
Hispanic or Latino17%
Asian14%
Two or more races10%
Black or African American3%
Filipino3%
Not reported2%
American Indian or Alaska Native—
Pacific Islander—
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. English learner progress: California School Dashboard, 2026 . 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: 74.9 of 83.8 full-time teaching positions. It counts positions, not individual teachers.

Student groups

How do kids like mine do here?

Hispanic or Latino students here scored well above the same group across California in math.

This schoolThe same group, California
  • Two or more races37 tested73%California 43%
  • Asian59 tested64%California 67%
  • White197 tested49%California 44%
  • Hispanic or Latino65 tested37%California 21%
  • Low-income56 tested25%California 23%
  • Students with disabilities44 tested2%California 8%

37% of Hispanic or Latino students scored Proficient or Advanced in math (grade 11, spring 2026), against 21% for the same group across California. Every group’s English results are in the table below.

Share who scored Proficient or Advanced, grade 11 math, 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 Advancedgrade 11 · spring 2026
Group and subjectHerevs Acalanes Union Highvs California
Low-income · 56 tested
English45%−1863%−449%
Math25%−1843%+223%
White · 197 tested
English66%−1783%−268%
Math49%−1665%+544%
Hispanic or Latino · 65 tested
English55%−1772%+649%
Math37%−1249%+1621%
Asian · 59 tested
English78%−1189%−179%
Math64%−1680%−367%
Two or more races · 38 tested in English, 37 in math
English81%−788%+1467%
Math73%−376%+3043%
Students with disabilities · 44 tested
English16%−2642%−319%
Math2%−1416%−68%

Each gap is to the same group, grades and subject: in Acalanes Union High, and across California. ■ Green: a group that is behind across California does much better here, by 10 points or more and more than twice the margin of error.

Black or African American and military-family students and English learners: fewer than 30 tested here. No published rate here for Filipino, American Indian or Alaska Native, Pacific Islander and homeless students 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.

After high school

How many students here graduate, and where do they go next?

98% of students graduated in four years in 2024–25. That compares with 89% across California. 79% were ready for college or career (state measure) in 2024–25. 88% of the class of 2023 enrolled in college within 12 months.

ready for college or career (state measure), 2024–25

79%

Across California: 52%.

of graduates finished the UC/CSU course list, 2024–25

79%

At the average California high school: 56%.

Graduation, college and university records

Preparation · each measure describes a different student group

Graduated in four years

98%

Across California: 89%

2024–25 · 421 of 428 students who started 9th grade together

Ready for college or career (state measure)

79%

Across California: 52%

2024–25 · 339 of 428 students in the state’s measure

Finished the UC/CSU course list

79%

Average California high school: 56%

2024–25 · 332 of 421 graduates finished the UC/CSU course list

Destinations · class of 2023

Where students who finished high school went

88% enrolled in college within 12 months · 381 students who finished high school

  • University of California UC detail ↓63 · 17%
  • California State University CSU detail ↓64 · 17%
  • California community college123 · 32%
  • In-state private13 · 3%
  • Out-of-state, 4-year72 · 19%
  • Out-of-state, 2-year1 · <1%
  • Not enrolled45 · 12%

Source: CDE college-going records, class of 2023. Shares are our arithmetic: each count divided by all high-school completers (graduates and other students who finished), rounded together so they total 100. “Not enrolled” does not describe employment, military service or other routes.

Where the class of 2023 went
88%enrolled in college within a year

381 completers, class of 2023

  • University of California63 (17%)
  • California State University64 (17%)
  • California community college123 (32%)
  • In-state private13 (3%)
  • Out-of-state, 4-year72 (19%)
  • Out-of-state, 2-year1 (0%)
  • Not enrolled45 (12%)

Source: CDE’s college-going rate for the class of 2023 (enrolled in college within 12 months). Shares are our arithmetic: count ÷ completers, rounded together so they total 100. A dash means we have no figure for that row; it isn’t zero.

Where these figures come fromEach measure’s source, student group and definition
Graduated in four years
2024–25 · 421 of 428 students who started 9th grade together. California Department of Education, adjusted cohort graduation records. Comparison is SchoolScope’s combination of graduates and cohort counts across the reference schools, not CDE’s published state rate.
Ready for college or career (state measure)
2024–25 · 339 of 428 students in the state’s measure. California Department of Education, College/Career Indicator (CCI), overall “Prepared” rate, among the students in the indicator’s group. Prepared is CDE’s overall classification, not AP participation or a college admission rate.
Finished the UC/CSU course list
2024–25 · 332 of 421 graduates finished the UC/CSU course list. California Department of Education, A–G completion records (graduates who met the UC/CSU course requirements). Course completion is separate from college enrollment.
Where students who finished high school went
CDE college-going records, class of 2023. College enrollment is counted for 12 months after finishing high school and matched to college records, so this runs about two years behind. A dash is unavailable, not zero.
A closer look: UC and CSU admission recordsApplied, admitted and enrolled, from each university system’s own records

UC’s own records

University of California

Fall 2025 first-year entry · counts, not a school rating

Applied
202
Admitted
149
Enrolled
69

By campus · fall 2025

  • UC DavisApplied 168 · Admitted 54 · Enrolled 12
  • UC Santa BarbaraApplied 160 · Admitted 57 · Enrolled 8
  • UC BerkeleyApplied 149 · Admitted 19 · Enrolled 11
  • UC San DiegoApplied 144 · Admitted 30 · Enrolled 9
  • UC IrvineApplied 143 · Admitted 19 · Enrolled 5
  • UCLAApplied 141 · Admitted 12 · Enrolled 8
  • UC Santa CruzApplied 115 · Admitted 90 · Enrolled 12
  • UC RiversideApplied 62 · Admitted 54 · Enrolled 3
  • UC MercedApplied 45 · Admitted 45 · Enrolled under 3

These records don’t show the school’s effect on admission. A student can apply to several campuses, so campus counts don’t add up to the total. UC blanks counts under 5 applicants or under 3 admits or enrollees; “+” marks a partial count; a dash is unavailable. Source: UC admissions by source school.

Each fall since 2016

  • Fall 2025Applied 202 · Admitted 149 · Enrolled 69
  • Fall 2024Applied 184 · Admitted 123 · Enrolled 60
  • Fall 2023Applied 182 · Admitted 131 · Enrolled 66
  • Fall 2022Applied 186 · Admitted 109 · Enrolled 47
  • Fall 2021Applied 196 · Admitted 127 · Enrolled 62
  • Fall 2020Applied 145 · Admitted 113 · Enrolled 56
  • Fall 2019Applied 139 · Admitted 90 · Enrolled 39
  • Fall 2018Applied 155 · Admitted 89 · Enrolled 51
  • Fall 2017Applied 149 · Admitted 91 · Enrolled 48
  • Fall 2016Applied 128 · Admitted 88 · Enrolled 47

CSU’s own records

California State University

Fall 2025 first-year entry · counts, not a school rating

Applied
244
Admitted
234
Enrolled
61

By campus · falls 2021–2025 added together

Five years in each number, not one. CSU publishes campus counts only as five-year totals, so these aren’t comparable to the fall 2025 figures above or to UC’s one-fall campus bars.

  • Cal Poly San Luis ObispoApplied 793 · Admitted 244 · Enrolled 71
  • San Diego StateApplied 776 · Admitted 353 · Enrolled 84
  • Cal State Long BeachApplied 423 · Admitted 209 · Enrolled 9
  • Chico StateApplied 349 · Admitted 328 · Enrolled 55
  • San José StateApplied 248 · Admitted 204 · Enrolled 34
  • Cal Poly PomonaApplied 235 · Admitted 183 · Enrolled 17
  • San Francisco StateApplied 212 · Admitted 203 · Enrolled 21
  • Sonoma StateApplied 136 · Admitted 130 · Enrolled 11
  • Cal Poly HumboldtApplied 127 · Admitted 121 · Enrolled under 6
  • Cal State FullertonApplied 121 · Admitted 105 · Enrolled under 6
  • Sacramento StateApplied 116 · Admitted 114 · Enrolled under 6
  • Cal State East BayApplied 101 · Admitted 93 · Enrolled under 6
  • Cal State Monterey BayApplied 101 · Admitted 96 · Enrolled under 6
  • Cal State NorthridgeApplied 54 · Admitted 53 · Enrolled under 6
  • CSU Channel IslandsApplied 52 · Admitted 50 · Enrolled under 6
  • Cal State San MarcosApplied 52 · Admitted 51 · Enrolled under 6
  • Cal State LAApplied 50 · Admitted 49 · Enrolled —
  • Fresno StateApplied 35 · Admitted 35 · Enrolled —
  • CSU BakersfieldApplied 17 · Admitted 14 · Enrolled —
  • Cal State San BernardinoApplied 14 · Admitted 14 · Enrolled —
  • Cal State Dominguez HillsApplied 12 · Admitted 12 · Enrolled —
  • Cal Poly Maritime AcademyApplied 12 · Admitted 10 · Enrolled under 6
  • Stanislaus StateApplied under 6 · Admitted under 6 · Enrolled —

These records don’t show the school’s effect on admission. A student can apply to several campuses, so campus counts don’t add up to the total. CSU withholds counts under 6; a dash is unavailable. Students who reach CSU from a community college aren’t counted here. Source: CSU High School Success dashboard.

Each fall since 2021

  • Fall 2025Applied 244 · Admitted 234 · Enrolled 61
  • Fall 2024Applied 226 · Admitted 219 · Enrolled 68
  • Fall 2023Applied 239 · Admitted 225 · Enrolled 66
  • Fall 2022Applied 215 · Admitted 206 · Enrolled 80
  • Fall 2021Applied 210 · Admitted 194 · Enrolled 54
Advanced courses on record

AP courses the school is approved to teach

The College Board approved this school to teach 27 AP courses in 6 subjects for 2025–26.

College Board AP Course Audit Ledger · 2025–26. Authorization doesn’t show which courses run or who can take them; ask the school.

  • Math & Computer Science6
  • Sciences6
  • English2
  • History & Social Science6
  • World Languages & Cultures3
  • Arts4
Every approved AP course27 courses in 6 subjects
Math & Computer Science 6
  • Calculus AB
  • Calculus BC
  • Computer Science A
  • Computer Science Principles
  • Precalculus
  • Statistics
Sciences 6
  • Biology
  • Chemistry
  • Environmental Science
  • Physics 1
  • Physics 2
  • Physics C: Mechanics
English 2
  • English Language and Composition
  • English Literature and Composition
History & Social Science 6
  • European History
  • Human Geography
  • Macroeconomics
  • Psychology
  • U.S. Government and Politics
  • United States History
World Languages & Cultures 3
  • Chinese Language and Culture
  • French Language and Culture
  • Spanish Language and Culture
Arts 4
  • 2-D Art and Design
  • 3-D Art and Design
  • Drawing
  • Music Theory

Family and staff answers

What would families and staff tell you?

Families can answer a short set of questions about Las Lomas. 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 Acalanes Union High yet. Tell us your district’s email domain and we’ll work on adding it.

Ask us to add your district

Money

Where does the money go?

$18,936 for each student in 2023–24. California’s high schools spent $19,544 for each student. Acalanes Union High’s plan for 2026–27 covers $9 million.

$18,936

for each student at this school, 2023–24
Spent at the school
$12,607
The school’s share of district office costs
$6,329
Of the total, from federal funds
$755
  • Las Lomas$18,936
  • Acalanes Union High high schools$20,266
  • California high schools$19,544

The district and California figures combine their high schools, weighted by enrollment (our calculation, 1,612 California schools). Spending does not show how well money is used. Source: California Department of Education, per-school spending report, 2023–24. Funding records ↓

Acalanes Union High’s yearly plan

$9million

in the district’s plan for 2026–27

$2million

planned for services for English learners, low-income students and foster youth

This is the district’s plan. It is not this school’s own budget. The plan has 4 goals. The district’s page lists each one. The plan covers $9 million of $107 million in total budgeted spending. Source: Acalanes Union High Local Control and Accountability Plan (LCAP), 2026–27. Read the district’s plan →

The neighborhood

What is the area around Las Lomas like?

These figures are for everyone who lives in ZIP code 94596. They are not figures for the families at Las Lomas.

Typical household income in a year

$135,635

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 94596.

Typical home value
$1,277,800
People who live in this ZIP code
23,417
Typical age
37.1 years
Adults 25 and older with a four-year college degree
71%

Questions to ask

What should I ask, and when?

Bring these 6 questions to Las Lomas. Confirm anything about applying with the school itself.

On a tour

  1. What extra help do low-income students get, and how do you know it’s working?25% of low-income students scored Proficient or Advanced in math, grade 11, spring 2026 (56 students tested); the same group across California: 23%
  2. Which courses and career pathways does the school run, and who can enroll?
  3. How do counselors help students plan for college, training or work?
  4. What support is available when a student falls behind on graduation requirements?

At the office

  1. What time does the day start and end, and is any day shorter?
  2. Is there care before or after school, and what does it cost?

Getting in

How do I get in?

Ask Acalanes Union High which school serves your address.

Where it is

Where is Las Lomas?

Address
1460 South Main Street, Walnut Creek 94596Get directions (opens Google Maps in a new tab)
Administrator
Sara HarrisAs the state’s school directory lists it, last updated February 9, 2023.

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 8 common questions

How do I get in?

Ask Acalanes Union High which school serves your address. See the details ↓

Is Las Lomas a good high school?

Las Lomas High has a Scope Score of 86. It scored higher than 87 in 100 of California’s 1,498 scored public high schools (Strong, 87th percentile, spring 2025). See the details ↓

How often do students miss school or get suspended?

In 2025–26, 13 in 100 students missed 10% or more of school days, against 23 in 100 at the average high school in the Acalanes Union High district. 2.5% of students (38 of 1,541) were suspended at least once in 2025–26, against 2.9% at the average California high school. See the details ↓

How does math compare with English?

In grade 11, spring 2026, math trails English by 16 percentage points in the share who scored Proficient or Advanced, against 25 points across California. See the details ↓

How do kids like mine do here?

In spring 2026, 45% of low-income students in grade 11 at Las Lomas High in Walnut Creek scored Proficient or Advanced in English, against 49% for the same group across California. See the details ↓

What could my child study here?

The College Board approved this school to teach 27 AP courses in 6 subjects for 2025–26. See the details ↓

Where do students go after finishing high school here?

88% of the class of 2023 enrolled in college within 12 months, by CDE’s college-going records. See the details ↓

What should I ask on a visit?

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

The full record

Source records

This page is built from 17 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
17
Sources
California Department of EducationU.S. Census BureauUniversity of CaliforniaCollege BoardU.S. Department of Education, Office for Civil RightsNational Student Clearinghouse
State test years
2017–2026

Results

Students

After high school

Money and staff

Place, downloads and method

Score factorssource values, index and weights · 2024–25 · ranked #181 of 1,498 California high schools we score · #4 of 5 in Acalanes Union High
Score factors, 2024–25
FactorSchoolIndexWeight
Graduation rate98%6325%
Exceeded standardaverage of English and math37%7322%
Ready for college or career (state measure)79%7220%
Met or exceededaverage of English and math64%7118%
Chronically absent14 in 100625%
Suspension rate2.5% (40 of 1,610)555%
English learners: top level20%575%

Index is where the school's value sits among the California high schools we score, from 0 to 100, where 50 is their average; it is not a percentile. School values are from 2024–25. 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.

Scope Score by year2018–19 to 2024–25 · each year’s inputs, and the score for each year we could verify

The 2024–25 Scope Score, in the current-formula row below, uses the state’s college-or-career readiness measure, 2024–25. No verified earlier Scope Scores are available here.

Scope Score

School yearScope ScorePercentileRankComparison group
2024–258687#181California high schools · 1,498 schools · current formula

2018–19, 2021–22, 2022–23 and 2023–24 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 absenceSuspension
2018–1912 in 1002.1% (34 of 1,630)
2021–22not on filenot on file
2022–23not on filenot on file
2023–2410 in 1001.9% (31 of 1,609)
2024–2514 in 1002.5% (40 of 1,610)

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

No 2019–20 or 2020–21 records in this SchoolScope series
Results by gradeEnglish and math · grade 11 · spring 2026 · % of tested students

What each level means: California's level descriptions.

English · 2025–26 results by grade

Share of students tested, spring 2026
EnglishTestedAdvancedProficientDeveloping levelMinimalProficient or AdvancedCaliforniaDifference
Grade 1138239%28%20%13%67%57%+10

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 · 2025–26 results by grade

Share of students tested, spring 2026
MathTestedAdvancedProficientDeveloping levelMinimalProficient or AdvancedCaliforniaDifference
Grade 1138228%23%22%27%51%32%+19

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.

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 · English38239%67%
2026 · Math38228%51%
2025 · English37843%71%
2025 · Math37930%56%
2024 · English42145%73%
2024 · Math42232%53%
2023 · English36244%77%
2023 · Math36431%54%
2022 · English37139%68%
2022 · Math37729%56%
2019 · English38554%80%
2019 · Math37531%58%
2018 · English34643%77%
2018 · Math34731%59%
2017 · English36438%70%
2017 · Math35223%52%

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 11 · English37871%
2025 · Grade 11 · Math37956%
2024 · Grade 11 · English42173%
2024 · Grade 11 · Math42253%
2023 · Grade 11 · English36277%
2023 · Grade 11 · Math36454%
2022 · Grade 11 · English37168%
2022 · Grade 11 · Math37756%
2019 · Grade 11 · English38580%
2019 · Grade 11 · Math37558%
2018 · Grade 11 · English34677%
2018 · Grade 11 · Math34759%
2017 · Grade 11 · English36470%
2017 · Grade 11 · Math35252%

Current 2025–26 grade results appear above. “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
Schoolwide39121%30%44%4%

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-income5645%−18−4
White19766%−17−2
Hispanic or Latino6555%−17+6
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 · 14 in 100 → 2025–26 · 13 in 100 · −1 in 100
Suspension rate2024–25 · 2.5% (40 of 1,610) → 2025–26 · 2.5% (38 of 1,541) · 0.0 percentage points
Group2018–192025–26Change
Female13 in 10015 in 100+2 in 100
Male11 in 10012 in 100+1 in 100
Asian7 in 10011 in 100+4 in 100
Black or African American3 of 377 of 46—
Filipino7 of 587 of 45—
Hispanic or Latino12 in 10020 in 100+8 in 100
Two or more races4 of 5214 in 100—
White13 in 10010 in 100−3 in 100
Students with disabilities21 in 10019 in 100−2 in 100
English learners16 of 6418 in 100—
Low-income19 in 10024 in 100+5 in 100
All students12 in 10013 in 100+1 in 100

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.

Graduation and readinessstate records · each rate for its own year and class of students
MeasureSource record
This school · CCI overall PreparedCDE College/Career Indicator · CCI source year 2025 · all students · all students in the current four-year graduation cohort, plus only Prepared fifth-year graduates from the prior cohort. Overall CCI Prepared rate 79% · numerator 339 students classified Prepared · denominator 428 CCI students.
California · CCI overall PreparedCDE statewide CCI cohort · CCI source year 2025 · all students · overall Prepared rate 52% · numerator 257,567 students classified Prepared · denominator 497,814 CCI students.
AP pathway among CCI Prepared studentsCDE College/Career Indicator · CCI source year 2025 · all students · AP pathway rate 80% · AP-pathway numerator 270 · denominator 339 (CCI Prepared students). This measure uses Prepared students as its denominator, not the whole CCI cohort; it is not an AP exam-taking rate or a count of AP courses offered. That cohort includes all students in the current four-year graduation cohort plus only Prepared fifth-year graduates from the prior cohort. In 2025 the pathway accepts two qualifying AP exams, two qualifying AP courses, or a combination of one of each in different subjects.

CDE's overall Prepared rate is the college-readiness factor in the Scope Score (20% of the high school score). The school rate is 339 of 428 CCI students, not the AP-only pathway or A–G completion rate. The California figure is CDE's statewide CCI student cohort, not an average of SchoolScope's comparable high schools or the SchoolScope school-rank pool.

Graduation rate
98%
AP route, among those ready for college or career
80%
2025 CDE CCI cohort · AP courses, exams, or both; share of students ready for college or career (CDE’s “Prepared”), not course offerings
Finished the UC/CSU course list (A–G)
79%
A–G are the 15 courses (across 7 subjects) required for UC/CSU eligibility
College-going rate
88%

These source periods and populations differ: graduation uses an adjusted cohort, while A–G completion and college-going use separately reported groups. The rates are shown individually, without a shared performance tier.

UC admissions, universitywidefall 2016–2025 · applied, admitted, enrolled, mean GPA · summed across CEEB codes
YearAppliedAdmittedEnrolledMean GPA (applied)Mean GPA (admitted)Mean GPA (enrolled)
2025202149693.944.034.13
2024184123603.924.034.09
2023182131663.964.064.13
2022186109474.014.144.28
2021196127623.934.064.14
2020145113564.004.074.07
201913990393.853.954.04
201815589513.864.024.11
201714991483.864.044.09
201612888473.843.933.96

Source: UC admissions by source school. Dated fall first-year UC applicants, admitted students, and enrollees. GPA is each group's mean weighted, capped high-school GPA for 10th/11th-grade college-preparatory courses. SchoolScope leaves GPA unavailable when several CEEB codes contribute rather than combining their means. UC blanks counts under 5 applicants or under 3 admits or enrollees, shown here as “under 5” or “under 3”; — means unavailable, and a reported zero remains zero. A + marks a partial SchoolScope sum of observed counts, not a complete total; missing contributions may be zero. No admit rate is computed here. Complete, matching counts can support a historical descriptive rate, but do not establish a school's effect or predict individual chances. Series shown from 2016.

UC admissions by campuslatest falls on file · each campus counted separately
CampusYearAppliedAdmittedEnrolled
Berkeley20251491911
Berkeley20241221811
Berkeley20231151911
Berkeley202212686
Berkeley202111674
Davis20251685412
Davis20241364912
Davis2023139428
Davis20221385212
Davis20211235119
Irvine2025143195
Irvine2024120235
Irvine2023106299
Irvine202211313under 3
Irvine2021110133
Los Angeles2025141128
Los Angeles2024123106
Los Angeles2023115109
Los Angeles202213187
Los Angeles2021135138
Merced20254545under 3
Merced20242827under 3
Merced20232323under 3
Merced20222321under 3
Merced202122213
Riverside202562543
Riverside202451425
Riverside20233525under 3
Riverside20224034under 3
Riverside202150407
San Diego2025144309
San Diego2024135253
San Diego2023120223
San Diego202214119under 3
San Diego202113324under 3
Santa Barbara2025160578
Santa Barbara2024138418
Santa Barbara20231413412
Santa Barbara20221483512
Santa Barbara20211444211
Santa Cruz20251159012
Santa Cruz202497598
Santa Cruz20231116912
Santa Cruz2022103326
Santa Cruz202196556
Universitywide202520214969
Universitywide202418412360
Universitywide202318213166
Universitywide202218610947
Universitywide202119612762

Source: UC admissions by source school. Dated fall first-year UC applicants, admitted students, and enrollees. Campus totals are not interchangeable with Universitywide; students can apply to several campuses. Universitywide is separately reported; never derive it by adding campus rows. Universitywide applicant and admit counts are unduplicated. UC blanks counts under 5 applicants or under 3 admits or enrollees, shown here as “under 5” or “under 3”; — means unavailable, and a reported zero remains zero. A + marks a partial SchoolScope sum of observed counts, not a complete total; missing contributions may be zero. No admit rate is computed here; these records do not establish a school's effect or predict individual chances.

AP course catalog2025–26 · College Board course authorizations
SubjectAuthorization recorded for
2-D Art and Designthis school
3-D Art and Designthis school
Biologythis school
Calculus ABthis school
Calculus BCthis school
Chemistrythis school
Chinese Language and Culturethis school
Computer Science Athis school
Computer Science Principlesthis school
Drawingthis school
English Language and Compositionthis school
English Literature and Compositionthis school
Environmental Sciencethis school
European Historythis school
French Language and Culturethis school
Human Geographythis school
Macroeconomicsthis school
Music Theorythis school
Physics 1this school
Physics 2this school
Physics C: Mechanicsthis school
Precalculusthis school
Psychologythis school
Spanish Language and Culturethis school
Statisticsthis school
U.S. Government and Politicsthis school
United States Historythis school

Authorization ≠ a section running this year — the Ledger records what the school may teach, not seat counts.

Advanced coursework, federal snapshot2023–24 · Civil Rights Data Collection · dated historical snapshot
MeasureThis school
AP offeredoffered
AP course count23
AP enrollment (male/female)742
IB participationnot reported
Dual enrollmentnot offered
Algebra I in grade 8not reported
Calculus sections5
Physics sections4
Chemistry sections12
Reported male/female enrollment (CRDC)1,559

These counts aren’t part of the Scope Score. “Not reported” means the federal record has no value for that item; it isn’t a zero. Enrollment counts add the male and female students the survey reports.

College destinationsclass of 2023 · state college-going records, 12 months after graduation
DestinationCompleters% (derived)
University of California6317%
California State University6417%
California community college12332%
In-state private133%
Out-of-state, 4-year7219%
Out-of-state, 2-year10%
Not enrolled4512%

381 students who finished high school, class of 2023 · state-reported college-going rate 88% · % column is computed by SchoolScope (count ÷ all who finished high school; CDE calls them completers), not a CDE-native rate · an unavailable or suppressed cell is marked as missing; a reported zero remains distinct · source: CDE 12-mo CGR, 2023 cohort (the newest published), National Student Clearinghouse match — a different, older vintage than the fall 2025 UC admissions rows above.

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

Per-pupil spending

District · current expense$16,341 per pupil

NCES F-33 · FY 2020–21 (2021) · fall district membership: 5,535 pupils

California · selected district mean$14,491 per pupil

NCES F-33 · FY 2020–21 (2021) · SchoolScope’s unweighted mean across 818 selected California district finance records

School-level federal expenditures$552 per pupil

CDE ESSA · school-attributed per-pupil record · FY 2023–24 (2024) · source denominator: 1,568

Central federal expenditures attributed here$203 per pupil

CDE ESSA · central expenditures attributed to this school · FY 2023–24 (2024) · source denominator: 1,568

District current expense · FY 2024–25$20,508 per ADA

CDE SACS Current Expense of Education · district fiscal year ending 2025 · average daily attendance denominator

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.

How the California mean was selected

SchoolScope starts with its selected California finance records, not every NCES California district. For FY 2020–21, it calculates an unweighted mean of NCES F-33 current expense per pupil. District records contribute once, regardless of enrollment. The calculation keeps records with positive per-pupil current expense, enrollment over 100, CCD agency type 1, and a recorded district name; it excludes names ending in County Office of Education, Department of Education, or Superintendent of Schools. This is a SchoolScope calculation, not a state-published spending average.

Selected General Fund operating costs · FY 2024–⁠25 · SchoolScope calculation
Instruction 58%Instruction support 12%Student services 12%Administration 6%Buildings & maintenance 11%Other 1%
The arithmetic behind these shares · FY 2024–25
GroupDollarsShare, to two decimalsPrinted
Instruction$61,784,40158.47%58%
Instruction support$12,422,02411.75%12%
Student services$12,301,51811.64%12%
Administration$6,869,0666.50%6%
Buildings & maintenance$11,529,59610.91%11%
Other$767,9130.73%1%
Total$105,674,518100.00%100%

These shares are our arithmetic: each group’s dollars divided by the $105,674,518 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$16,341 per pupil
2020$15,088 per pupil
2019$15,267 per pupil
2018$14,295 per pupil
2017$13,573 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 holders2.3%

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 94596 · not the school’s students
American Community Survey 5-year estimates · 2020–2024 · ZIP 94596 area
MeasureEstimate
Median household income$135,635
Bachelor's degree or higher (adults 25+)71%
ZIP-area population23,417
Median age37.1 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 94596 →

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Data sources: public data sources, including the California Department of Education · state tests (CAASPP) 2025–26 · Scope Score from 2024–25 results, compared across 1,498 high 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 · UC fall first-year source records — UC blanks counts under 5 applicants or 3 admits or enrollees; “+” marks a partial count; the all-campus total is reported separately · AP courses the College Board approved, 2025–26 (approved to teach, not enrollment) · federal civil rights data (CRDC) 2023–24, a past snapshot · state college-going records, class of 2023, matched to National Student Clearinghouse enrollment · Data updated October 15, 2026

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