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Charter elementary school

CORE Charter

Marysville, CA · Grades TK-12 · 554 students · Camptonville Elementary

No single number tells this school's story. Here's the honest picture.

40% of tested students are Proficient or Advanced in English and 16% in math. Explore the evidence alongside the opportunities your child would use.

SchoolScope archetype

Culture First

What this means for your family

Ask whether the low absenteeism and suspension numbers come from what the school does or from the community it serves — both can produce the same numbers, and only a visit tells you which.

How archetypes are assigned →

Contact

DistrictCamptonville Elementary
PrincipalChristopher Mahurin
GradesTK-12
Enrollment554 students

Math

16%

Grades 3 & 5 · Proficient or Advanced

English

40%

Grades 3 & 5 · Proficient or Advanced

Students

554

Total enrollment

Chronic absence

6%

Students absent 10% or more of school days

What are you trying to decide?

The overall score is a starting point.

Look at subject results, trends and student groups, then consider the opportunities your child would use.

View school performance →

Academic performance

What do the results tell us?

2025 results · Grades 3 & 5 · weighted by students tested within each subject.

Proficient or Advanced combines Levels 3 and 4, formerly Standard Met and Standard Exceeded. California changed the names for 2025–26; the cut scores did not. About the labels →

Share at Proficient or Advanced

0%25%50%75%100%2019: 20%2022: 25%2023: 26%2024: 18%2025: 16%2019: 35%2022: 35%2023: 33%2024: 41%2025: 40%201920222023202420250%25%50%75%100%2019: 20%2022: 25%2023: 26%2024: 18%2025: 16%2019: 35%2022: 35%2023: 33%2024: 41%2025: 40%20192022202320242025
● Math┄ English

Gaps in the lines mark years without annual results.

Exact annual results
YearMathEnglish
201920%35%
202225%35%
202326%33%
202418%41%
202516%40%

Each year describes that year’s tested students. Changes between years do not follow the same children over time. Cohort-growth evidence, when available, is labeled separately below.

Annual results and the full academic record
Is it getting better · CAASPP 2019 to 2025

Climbed from the 22nd to the 40th percentile since 2019 — past roughly 900 elementary schools.

Most rating sites would stop at “27% proficient” and call it done. CORE Charter deserves a closer read. More than half of its students qualify for free or reduced lunch (California: 64%) — and reading the numbers without that context misreads the school.

The headline number: 5.7% chronic absenteeism — versus 17.9% statewide. Attendance is the quietest strong signal a school can post.

As a charter, CORE Charter enrolls by application rather than address. That changes how you get in, but it doesn't change the score.

275 tested · 3 of 3 grades published · no cohort tracked

CORE Charter scores 32 of 100 on SchoolScope's Scope Score — the 40th percentile of 5,721 California elementary schools (CDE CAASPP 2025).

Proficiency here is back to its pre-pandemic level — 27% meet the standard, about where the school stood in 2019.

Percentile among 5,721 elementary schools statewide
Year detailsYear2019 · 22nd percentile · Scope Score 25 of 1002022 · 56th percentile · Scope Score 35 of 1002023 · 44th percentile · Scope Score 30 of 1002024 · 40th percentile · Scope Score 33 of 1002025 · 40th percentile · Scope Score 32 of 100
ELAOrange(Declined)MathOrange(Maintained)
ShowHide the by-grade tables, year by year
ELA — % met or exceeded, by grade
Grade20192022202320242025
Grade 332%35%17%27%27%
Grade 433%48%44%56%32%
Grade 539%36%48%52%58%
Grade 633%34%35%58%33%
Grade 749%50%43%66%59%
Grade 834%55%41%47%56%
Grade 1169%53%66%60%64%
Math — % met or exceeded, by grade
Grade20192022202320242025
Grade 326%27%17%14%16%
Grade 429%36%16%32%14%
Grade 514%23%35%21%16%
Grade 624%24%15%43%23%
Grade 747%32%33%34%41%
Grade 824%35%28%21%29%
Grade 1150%21%54%21%31%
Where students land · CAASPP 2024–25

One in four of students here meet the standard. 8% clear it by a lot.

ELA48% met or exceeded
Exceeded 13%Met 35%Nearly Met 26%Not Met 26%
Math25% met or exceeded
Exceeded 9%Met 16%Nearly Met 31%Not Met 44%
Exceeded Met Nearly Met Not Met
California elementary schools · average21% exceeded · 43% met or exceeded
This school against the California average
2019–2025 trend · CDE CAASPP
Scope% Exceeded% Met+GrowthAbsenceSuspension
This school328%27%5.7%0.7%
CA average · Elementary School3921%43%17.9%1.6%
This schoolCA avg
Scope3239
% Exceeded8%21%
% Met+27%43%
Growth
Absence5.7%17.9%
Suspension0.7%1.6%
California’s growth results and student groups
State growth model · CDE growth model 2024–25

California's own growth model splits here — the 60th percentile in reading against the 25th in math, among elementary schools.

Context — never part of the Scope Score

California runs its own growth model — it follows individual children in grades 4 through 8 and compares each one against a prediction from their own prior scores. On that measure this school sits a little below the middle of California elementary schools in reading, and the 25th in math. We show it; we don't score it.

pts vs expected is scale-score points above or below what California's model predicted for these same children from their own prior-year scores. It is not a percentage and not a percent of anything. A typical California elementary school lands at +2 in reading, and the middle half of them fall between −5 and +9 — the spread is wide, so read the rank, not the sign. CDE blends two consecutive years into each published figure, so adjacent years share input data and no year-over-year trend can honestly be drawn from them. It covers grades 4-8 only, and it is not part of the Scope Score — we assessed it and left it out: it tracks school demographics roughly three times as strongly as our own growth measure does, and one published year is not enough to test how stable it is.

California's growth model, ranked against the schools it scores
State model · readingmatched students, grades 4-8California growth model, reading: +4 scale-score points versus the state's expectation, 60th percentile of 7,519 reported schools.60th pctile · +4 pts
State model · mathmatched students, grades 4-8California growth model, math: −8 scale-score points versus the state's expectation, 25th percentile of 7,518 reported schools.25th pctile · −8 pts
this school| the tick is the middle of the California field

Students & opportunity

Who shares in the school’s results?

Who it works for · CAASPP 2024–25

Low-income students here meet the ELA standard ahead of the same group statewide.

At CORE Charter in Marysville, 46.2% of low-income students met or exceeded the ELA standard in 2025 and 38.2% statewide. Other subgroups: Low-Income students (18.9% Math proficient); White students (48.0% ELA proficient). The largest proficiency gap is 4.4 percentage points for low-income students. Data source: California Department of Education, CAASPP 2024-25. 143 students tested.

Met or exceeded · reading and math combined
All students at this school: 37% met or exceeded
All StudentsAll Students: this school 37%, district —, state 43%37%
WhiteWhite: this school 38%, district —, state 56%38% · +1 vs school
FemaleFemale: this school 33%, district —, state 44%33% · −4 vs school
Socioeconomically DisadvantagedSocioeconomically Disadvantaged: this school 33%, district —, state 32%33% · −4 vs school
MaleMale: this school 42%, district —, state 42%42% · +6 vs school

11 of 16 student groups here are too small to report — a privacy protection, not a gap.

this school district, same group California, same group
ShowHide Student-group results by grade
Student-group results by grade

Results compare different grade groups in the same year, relative to the lowest tested grade. They do not track the same children over time. Groups with fewer than 10 tested students per grade are not shown.

Low-income student ELA proficiency rises by 40.0pp from grade 3 to grade 5 at this school.

ShowHide California's growth model by student group
The state's growth model, by student group

California follows these children individually and predicts each one's score from their own prior year. Each row is read against the same group at a typical California elementary school — not against zero, and not against this school's all-students figure, because the state's expectation already differs by group.

Reading
English Only144 studentsEnglish Only, reading: +2 scale-score points versus expectation, against +3 for the same group at a typical California elementary school, 144 students.+2 pts · −1 vs typical
White119 studentsWhite, reading: +2 scale-score points versus expectation, against +5 for the same group at a typical California elementary school, 119 students.+2 pts · −3 vs typical
Low-income students75 studentsLow-income students, reading: +5 scale-score points versus expectation, against 0 for the same group at a typical California elementary school, 75 students.+5 pts · +5 vs typical
Math
English Only144 studentsEnglish Only, math: −10 scale-score points versus expectation, against +1 for the same group at a typical California elementary school, 144 students.−10 pts · −11 vs typical
White119 studentsWhite, math: −9 scale-score points versus expectation, against +5 for the same group at a typical California elementary school, 119 students.−9 pts · −14 vs typical
Low-income students75 studentsLow-income students, math: −16 scale-score points versus expectation, against −1 for the same group at a typical California elementary school, 75 students.−16 pts · −15 vs typical
this school typical California elementary school, same group| the centre tick is 0 = as predicted

— 2 more groups are reported here with between 11 and 29 students. We hold those back on purpose: at that size the figure swings about 17 points on its own, and a quarter of such groups land past the state's top or bottom cut point by chance alone. They are listed with their student counts in the data appendix. — A group not listed at all had fewer than 11 students with a growth score, so California published nothing for it here. That is a privacy protection, not a judgment about those students. — Context only. None of this enters the Scope Score.

The daily experience

What is it like to be a student here?

Students per teacher

Student–teacher ratio is a schoolwide staffing measure, not an average class size.

The people teaching · CDE staffing 2024–25

About 21 students for every teacher here.

Context — never part of the Scope Score

Students per teacher21 · district 20
Teaching staff33 teachers
Avg. experience11.8 years
Fully credentialed26%
First-year teachers15%
PrincipalChristopher Mahurin
ShowHide what the district pays
Teacher salary schedule$51,666 – $93,342
Superintendent salary$118,853

Pay is set by the district, not the school.

Attendance & discipline · 2024–25

Kids here show up more, and get suspended less, than the state average.

Chronic absenteeismChronic absenteeism: this school 5.7%, district 5.7%, state 17.9%5.7% · −12.2pp vs state
Suspension rateSuspension rate: this school 0.7%, district —, state 1.6%0.7% · −0.9pp vs state
This schoolDistrictCalifornia

Resources & neighborhood

What sits behind the school experience?

Explore school spending and the district budget
What gets spent · FY 2024–25

Its district spends $20,020 per student, more than the California average.

Context — never part of the Scope Score

The district's current expense of education per student, from CDE's annual SACS filing — the freshest district spending figure the state publishes.

Per-pupil spendingPer-pupil spending: $20,020, CA average $14,491$20,020 · district average
District current expense · FY 2024–25$23,908 per student
District averageCalifornia
Where the district's dollars go · FY 2024–25 · CDE SACS
Instruction 58%Instruction support 21%Student services 4%Administration 7%Buildings & maintenance 10%

District-level, from the district's own SACS general-ledger filing — school-by-school breakdowns aren't published by the state.

ShowHide the district's spending year by year
district detail, 2016–2020 — the newest published
2020$20,020 per pupil
2019$15,460 per pupil
2018$18,042 per pupil
2017$10,239 per pupil
2016$9,904 per pupil
The neighborhood · ACS 2024

More than half of students here qualify for free or reduced lunch, versus three in five statewide.

Context — never part of the Scope Score

Worth knowing

Transitional kindergarten is offered here — confirmed by actual Census Day enrollment, not just the listed grade span.

On the state's science test (CAST), 39% met or exceeded the standard — science is tested in grades 5 and 8 and once in high school, and it never enters the Scope Score.

Hispanic or Latino6.9% · district 6.6% · CA 56.1%
White72.9% · district 73.1% · CA 19.9%
Asian1.8% · district 1.8% · CA 10.2%
Black2.9% · district 2.7% · CA 4.8%
Other15.5% · district 15.8% · CA 9.0%
GenderFemale 53.8% · Male 45.7% · Non-binary 0.5%
Free or reduced lunch52.5% · CA 64%
Median income$70K · CA $85K
Median home value$381K · CA $659K
Bachelor's degree+18% · CA 35%
ZIP population37,732
Median age35 years

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2024) · ZIP-level

Culture & philosophy

What is the school’s approach?

School-stated approach · questions for your visit

Look beyond the brochure

A source-reviewed culture summary is not available for this profile yet. Ask how teaching, student support and family communication work day to day.

Read the school’s own website ↗

Family voices

What would you want another family to know about the daily experience here?

Ask a current family: “When your child needs help, how does the school respond?”

Educator voices

What should families understand about teaching, support and the school community?

Ask an educator: “How do you adapt a typical day for children with different needs?”

Bring these questions on a visit →

Compare nearby schools

What are the alternatives?

Compare schools serving the same grade stage. Private schools have no comparable state-test score.

2025 · elementary schools · combined reading and math measures. Percentiles compare schools within their enrollment group.

Private options →
SchoolTypePerformance bandAdvancedProficient or AdvancedDistanceSelect
CORE CharterCharterDeveloping8%27%School being viewed
Twin Rivers CharterCharterStrong53%76%1.9 mi
Paragon Collegiate AcademyCharterDeveloping14%30%0.5 mi
Edgewater ElementaryPublicDeveloping15%37%3.2 mi
Open the comparison tool →
More nearby public and private options
Your other options

Your other options

Nearby public schools across grade levels, plus private options within 10 miles.

All schools in Marysville →

Private schools do not receive a Scope Score or statewide ranking on SchoolScope.

4 private schools within 10 miles
Not scored
What should I check before applying?
District public
Confirm the attendance boundary and any permit options.
Charter
Check applications, priorities and deadlines with each school.
Private
Confirm admission requirements, tuition and financial aid.

Moving & enrollment

Which schools could serve my child?

Check enrollment with this charter school

Ask the school about applications, priorities and deadlines for your child’s grade.

School website →

Schools across the K–12 journey

Schools are grouped by grade stage. Nearby schools are not confirmed feeder links or address assignments. Verify the current path and eligibility with the district.

Charter enrollment details

Plan your next step

What should I do next?

Worth a school visit

Ask what the school is working on next. Strong numbers tell you where a school is, not where it's going.

  • Ask whether the tour can step into a working classroom — watch how the teacher handles a student who's stuck.
  • Ask to tour while school's in session, and notice how hallways and transitions feel — culture shows up between classes, not just in them.
  • Ask how the school communicates with families when a child starts to struggle.
  • Ask what a typical day looks like for a new student in the first few weeks.
Questions

Frequently asked questions

Is CORE Charter a good elementary school?
CORE Charter has a Scope Score of 32 out of 100, placing it in the 40th percentile of California elementary schools and ranked #3,409 statewide. 8.5% of students exceeded the state standard on the 2025 CAASPP assessment, which is 12.9 percentage points below the California average of 21.4%. The Scope Score weights 6 dimensions for elementary schools: exceeded standard (42%), met or exceeded (proficient) (23%), grade 3-to-5 growth (20%), chronic absenteeism (5%), suspension rate (5%), and ELPAC English Learner proficiency (5%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.
What are CORE Charter's CAASPP test scores?
On the 2025 CAASPP Smarter Balanced Assessment, 27.3% of students at CORE Charter met or exceeded the state standard in ELA and Math combined, and 8.5% exceeded it. The gap between those numbers matters: 18.8% of students are at the proficiency floor, while 8.5% went beyond it. Most rating sites report only the combined "proficient" number. SchoolScope surfaces the exceeded-vs-met split because it shows how many students go beyond the standard rather than only meeting it. 206 student-subject combinations were assessed.
How does CORE Charter rank in California?
CORE Charter ranks #3,409 among California elementary schools by Scope Score, placing it in the 40th percentile. This ranking is based on a weighted composite of 2025 CAASPP test performance (exceeded and met rates), grade-level growth (Grade 3 to grade 5 growth), chronic absenteeism, and suspension rate. Unlike single-number ratings, the Scope Score shows what drives the ranking so parents can decide what matters most to their family. See full methodology.
What is the attendance and school culture like at CORE Charter?
5.7% of students at CORE Charter are chronically absent (missing 10% or more of school days), which is better than the California average of 17.9%. The suspension rate is 0.7%, indicating a low-discipline-incident environment. SchoolScope includes these culture metrics in the Scope Score because they reflect day-to-day school experience in ways test scores alone cannot.
How does CORE Charter compare to other schools in Marysville?
CORE Charter scores 32/100 (40th percentile) among California elementary schools. To compare with nearby schools, SchoolScope shows the same metrics side by side: exceeded rate, proficiency, growth trajectory, and school culture indicators. The school serves 554 students. Use the schools in Marysville page or the map view to compare all elementary schools nearby.
How does CORE Charter serve low-income and underrepresented students?
At CORE Charter in Marysville, 46.2% of low-income students met or exceeded the ELA standard in 2025 and 38.2% statewide. Other subgroups: Low-Income students (18.9% Math proficient); White students (48.0% ELA proficient). The largest proficiency gap is 4.4 percentage points for low-income students. Data source: California Department of Education, CAASPP 2024-25. 143 students tested. SchoolScope shows disaggregated test scores by demographic subgroup so you can see how a school performs for your child's specific group — not just the school-wide average. Subgroup data is context, not part of the Scope Score: we don't penalize schools for who they serve. See our equity approach.

Use the published evidence to prepare questions, then verify fit and access with the school.

Behind the evidence

Inspect the full record

Public sources, visible methods and the underlying school record. Source years and limitations stay attached to the evidence.

How the Scope Score is calculated

On a narrow screen, scroll the table sideways to see the state comparison and weights.

What the score weighs · CAASPP 2024–25

The 5 things our score weighs

What the score weighs
What we weighHereStateWeight
Exceeded standard8.5%21.4%42%
Met or exceeded27.3%42.7%23%
Chronic absenteeism5.7%17.9%5%
Suspension rate0.7%1.6%5%
Grade gap (G3→G5, different students)+15.5pp-2.9pp

Source CAASPP 2025 · California Department of Education. Measures test performance, attendance, and climate — not arts, community, or your kid. How the score is built

A closer look at the evidence

CORE Charter: reading the evidence

CORE Charter posts 27% meeting the standard and 8.5% exceeding it, against 43% and 21.4% statewide. The gaps and the bright spots below are the real read.

Subject proficiency describes tested students, while graduation describes a graduating cohort. These figures are not successive stages followed by the same students.

Ask whether the low absenteeism and suspension numbers come from what the school does or from the community it serves — both can produce the same numbers, and only a visit tells you which.

Explore the underlying data →
Every number: score factors, grades, student groups and downloads
Every number · For the data nerds

Every number on this page

Score factors, grade-level breakdowns, subgroup proficiency, and nearest schools.

CORE Charter is ranked #3,409 statewide.

01Score factorsWeighted composite · 2024–25
Score factors
FactorSchoolStateWeight
Exceeded standard8.5%21.4%42%
Met or exceeded27.3%42.7%23%
Chronic absenteeism5.7%17.9%5%
Suspension rate0.7%1.6%5%
Grade gap (G3→G5, different students)+15.5pp-2.9ppnot scored
Exceeded standard
↓ vs CA 21.4% · index 38 · 50 = CA elementary-school midpoint
Met or exceeded
↓ vs CA 42.7% · index 38 · 50 = CA elementary-school midpoint
Chronic absenteeism
↑ vs CA 17.9% · index 70 · 50 = CA elementary-school midpoint · ▼ 0.5pp lower vs 2024
Suspension rate
↑ vs CA 1.6% · index 57 · 50 = CA elementary-school midpoint · ▲ 0.3pp higher vs 2024
Grade gap (G3→G5, different students)
↑ vs CA -2.9pp
02By grade & subgroupCAASPP 2024–25 · % of tested students
ShowHide table 02 — By grade & subgroup
ELATestedEXCMETNEARNOTMET++/CA
Grade 3445%23%30%43%27%−16
Grade 42814%18%21%46%32%−12
Grade 53116%42%13%29%58%+10
Grade 64013%20%40%28%33%−14
Grade 74615%43%22%20%59%+11
Grade 8417%49%34%10%56%+10
Grade 114522%42%20%16%64%+16
MathTestedEXCMETNEARNOTMET++/CA
Grade 3442%14%30%55%16%−29
Grade 4287%7%39%46%14%−27
Grade 5316%10%42%42%16%−19
Grade 6408%15%23%55%23%−12
Grade 74615%26%30%28%41%+8
Grade 84110%20%39%32%29%−3
Grade 114516%16%20%49%31%+7

We show the grade rows CDE publishes for this school. A missing grade or dash can mean the school does not serve that grade, that we hold no valid result for it, or that the tested group was too small to report. It does not mean zero.

Science (CAST)TestedEXCMETNEARNOT
Schoolwide1189%30%52%9%

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.

Subgroup · ELATestedMET+vs districtvs CA
Socioeconomically Disadvantaged14346.2%+8
White20448.0%−14
03Nearest elementary schoolssorted by Scope Score · Grade gap = grade 3 vs grade 5, this year, different students; Cohort growth = one school's returning cohort tracked across grades (mostly, not exactly, the same kids), in scale-score points — that's the measurement the Scope Score weights
SchoolDistScopeEXCMET+Grade gapCohort growthSusp
CORE Charter ←328.5%27.3%+15.5pp0.7%
Twin Rivers Charter1.9 mi6453.5%75.7%−0.2pp1.9%
Paragon Collegiate Academy0.5 mi3214.0%30.0%−7.3pp5.3%
Edgewater Elementary3.2 mi2915.3%37.0%−23.4pp2.3%
California average3921.4%42.7%−2.9pp1.6%
04More measurescontext · not all part of the Scope Score
ShowHide table 04 — More measures
YearScopePctileRankExcMet+AbsentSuspGrade gap
20192522#42975.6%29.0%5.3%0.3%-2.2pp
20223556#253715.0%34.1%11.0%0.4%-1.2pp
20233044#316210.6%29.5%9.8%0.3%+25.3pp
20243340#34195.2%33.5%6.2%0.4%+15.8pp
20253240#34098.5%27.3%5.7%0.7%+15.5pp
Grade gap = this year's grade 3 vs grade 5 result, two different sets of students, not a trend for any one child — it is not the measurement the Scope Score's growth dimension uses. See §01 above and /methodology#verdicts for the school's actual scored (cohort) growth.
NO STATEWIDE TESTING 2020–21 (COVID) · SCORE AND PERCENTILE ARE RELATIVE TO EACH YEAR'S FIELD
What we can't show
  • — Scored here as an elementary school — other grade spans appear in the data appendix.
05California growth model, by student group2025 · scale-score points vs the state's prediction · shown, never scored
ShowHide table 05 — California growth model, by student group
GroupReadingnCDE bandMathnCDE band
All Students+4151Average−8151Moderate
English Only+2144not categorised−10144not categorised
White+2119Average−9119Moderate
Socioeconomically Disadvantaged+575Accelerated−1675Moderate
Students with Disabilities−422Average−922Moderate
Two or More Races+2915Exceptional−215Average

Whole scale-score points above or below what CDE's model predicted for these same children from their own prior-year scores — not a percentage, not a percentile. Statewide a typical school lands near +1 with a spread of about 13 points either side, so read a figure against its group's own typical value, not against zero. Muted rows have fewer than 30 students with a growth score — published by CDE, held back from the narrative sections above because at that size the figure swings about 17 points on its own. “Not categorised” is CDE assigning no band — English Only, Recently Reclassified, and English Learners Only receive a value and no band, for every school in the state. It is not a missing number. Most figures blend two consecutive years, so adjacent published years share input data and no trend line can honestly be drawn across them. A group absent from this table had fewer than 11 students with a growth score and was never published. Grades 4-8 only. None of this enters the Scope Score — it is more strongly correlated with school demographics than our own growth measure, and one published year is not enough to test its reliability.

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EXC = exceeded standard · MET+ = met or exceeded ("proficient") · Source: CA Dept. of Education · CAASPP 2024–25 · n=5,721 elementary schools · Vintages: climate subgroups 2019+2025 · district finance per its label · ACS 2022 · Data updated 2026-09-18

SchoolScope scores and verdicts are our interpretation of public California Department of Education data — independent analysis, not an official rating. How we analyze · Request a correction

CORE Charter

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