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School Profile · Concord

Clayton Valley Charter High: Most kids here clear the bar, year after year. The question is what happens after that.

Clayton Valley Charter posts 54% meeting the standard; 24.6% push past it. Steady is worth something — and the gap between those two numbers is the thing to ask about.

1101 Alberta Way, 94521 (opens in new tab)·Contra Costa County Office of Education·Concord·Grades 9-12·2,373 students·22% low-income·Charter·2024–25 CAASPP·(925) 682-7474·Website
Charter school — publicly funded, independently operated, open enrollment via lottery. Learn more
Scope Score
59
💪 Strong All-Around · Solid
ranked #370 statewide · #1 of 5 in Contra Costa County Office of Education

Clayton Valley Charter High scores 59 of 100 on SchoolScope's Scope Score — the 83rd percentile of 2,160 California high schools (CDE CAASPP 2025).

Measures test performance, attendance, and climate — not arts, community, or your kid. How we score →

CDE CAASPP 2025

Most rating sites would stop at “54% proficient” and call it done. Clayton Valley Charter deserves a closer read. It sits at the 83rd percentile of 2,160 California high schools — but the ranking is the least interesting thing on this page.

The headline number: 1.0% chronic absenteeism — versus 30.2% statewide. Attendance is the quietest strong signal a school can post.

As a charter, Clayton Valley Charter enrolls by application, not address — the score reads the same, the enrollment path doesn't.

53.9%
Low-income · ELA · met standard

Clayton Valley Charter's most underrated number

53.9% of low-income students met the ELA standard — versus 38.2% for the same group statewide. That's the strongest kind of signal a school can post: it holds across income lines.

Clayton Valley Charter low-income: 53.9%State low-income: 38.2%

The 4 things our score weighs

Exceeded standard
24.6%
State 15.8%
8.7pp above state avg
Met or exceeded
53.7%
State 35.7%
18.0pp above state avg
Chronic absenteeism
1.0%
State 30.2%
29.2pp below state avg
Suspension rate
2.1%
State 3.6%
1.5pp below state avg
Worth a school visit

Ask how the school challenges kids who clear the standard early. The gap between meeting and exceeding is where pacing shows.

Where the path goes

The path below follows attendance boundaries — scores shown for each next step.

Estimated K-12 Path
Elementary
Floyd I. Marchus
No score
→
Middle
Floyd I. Marchus
No score
→
High
Clayton Valley Charter Hi…
59
This school

Estimated K-12 path based on district and proximity. Actual attendance zones may differ. Contact your school district for official feeder information.

Your other options

All schools in Concord →

Private alternatives nearby

Private schools within ~10 miles. These schools do not participate in state testing and cannot be scored or ranked.

The community around it

Community Profile
Context — not part of the Scope Score

Student demographics

Hispanic29.3%
White20.2%
Asian5.1%
Black2.9%
Other42.6%
GenderFemale 48.8%Male 51.0%Non-binary 0.2%
Low IncomeFree/reduced lunch eligible 22.3% (41pp below CA avg)
Resources & Access
Enrollment
2,373
923 above CA avg (~1,450)
Student-Teacher Ratio
25:1
4 more students per teacher than CA avg
Per-Pupil Spending
$173,382
CA avg: $14,815 · District avg · NCES F-33
Teacher Salary Range
$69,500 – $137,732
District schedule · CA median ~$98K
At Clayton Valley Charter High in Concord, 53.9% of low-income students met or exceeded the ELA standard in 2025, compared to 16.0% district-wide and 38.2% statewide. Clayton Valley Charter High outperforms its district average for low-income students by 37.9 percentage points in ELA. Other subgroups: Low-Income students (21.2% Math proficient); Hispanic students (65.0% ELA proficient). The largest proficiency gap is 30.5 percentage points for disabilities students. Data source: California Department of Education, CAASPP 2024-25. 117 students tested.
Equity Gaps
ELA · Disabilities−30.5pp
39.6% vs 70.1% overall · n=48
3 more gaps by subject
ELA Exceeded · Disabilities−24.2pp
8.3% vs 32.5% overall · n=48
Math · Disabilities−26.9pp
10.4% vs 37.3% overall · n=48
Math Exceeded · Disabilities−12.4pp
4.2% vs 16.6% overall · n=48

Subgroups with fewer than 15 students are excluded for privacy. Gaps of less than 3 percentage points are not shown.

Subgroup Proficiency
Low-Income118 tested
ELA 53.9%·Math 21.2%· +37.9pp vs district
Hispanic161 tested
ELA 65.0%·Math 27.9%· +65.0pp vs district
White147 tested
ELA 76.7%·Math 45.6%

Weighted average across tested grades. Subgroups with fewer than 15 students excluded. Data: CDE CAASPP 2024-25.

Funding Breakdown
Instruction 39%Support 60%Other 1%

Source: NCES F-33 (2019–2020) · Full district breakdown →

Neighborhood Context
Median Income
$126K
$41K above CA median
Median Home Value
$853K
$194K above CA median
Bachelor's+
45%
10pp above CA avg
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2024) · ZIP-level
Whole Child
Teacher experience, college/career readiness, and more. Context only — never part of the Scope Score.
Teacher Experience
10.8 years avg experience
95 teachers · 6% second-year
Teacher Credentials
76% fully credentialed
1.1% on intern/emergency permit
AP Courses Offered
45 AP courses
322 students qualified via AP exam

Sources: CDE SARC · CDE College/Career Indicator, 2024-25

Community Profile provides context about who attends this school and the resources available. These factors are never part of the Scope Score. Learn why →
For the data nerds

Every number on this page

Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.

01Score factorsWeighted composite · 2024–25
Exceeded standard · 22%
24.6%
↑ vs CA 15.8% · 59th pctile
Met or exceeded · 18%
53.7%
↑ vs CA 35.7% · 63th pctile
Chronic absenteeism · 5%
1.0%
↑ vs CA 30.2% · 74th pctile
Suspension rate · 5%
2.1%
↑ vs CA 3.6% · 57th pctile
02By grade & subgroupCAASPP 2024–25 · % of tested students
ELATestedEXCMETNEARNOTMET++/CA
Grade 1153833%38%19%11%70%+23
MathTestedEXCMETNEARNOTMET++/CA
Grade 1154217%21%28%35%37%+14
Science (CAST)TestedEXCMETNEARNOT
Grade 5/8/115398%29%56%7%

CAST is tested in grades 5, 8, and once in high school — not annually. Not part of the Scope Score.

Subgroup · ELATestedMET+vs districtvs CA
Socioeconomically Disadvantaged11753.9%+38+16
Hispanic/Latino16065.0%+65+26
White14676.7%—+15
03Peer comparison · nearest high schoolssorted by Scope Score
SchoolDistScopeEXCMET+GrowthSusp
Clayton Valley Charter High ←—5924.6%53.7%—2.1%
Concord High2.2 mi4910.3%30.1%—2.8%
California average—4415.8%35.7%—3.6%
04More measurescontext · not all part of the Scope Score
AP Exam Prepared
Not offered
This school may not offer AP courses
Scope Score history
65%59%'19'22'23'24'25
2019 · 2022 · 2023 · 2024 · 2025 · no testing 2020–21 (COVID) · rank #247 → #354 → #349 → #194 → #370
Source: CA Dept. of Education · CAASPP 2024–25 · n=2,160 high schools · Data updated 2026-07-03methodology · data updates · CSV · report issue
How to get into a charter school in LA →

Frequently asked questions

Is Clayton Valley Charter High a good high school?
Clayton Valley Charter High has a Scope Score of 59 out of 100, placing it in the 83rd percentile of California high schools and ranked #370 statewide. 24.6% of students exceeded the state standard on the 2025 CAASPP assessment, which is 8.7 percentage points above the California average of 15.8%. The Scope Score weights six dimensions for high schools: exceeded standard (43%), met or exceeded (22%), grade 3-to-5 growth (15%), chronic absenteeism (10%), ELPAC English Learner proficiency (5%), and suspension rate (5%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.
What are Clayton Valley Charter High's CAASPP test scores?
On the 2025 CAASPP Smarter Balanced Assessment, 53.7% of students at Clayton Valley Charter High met or exceeded the state standard in ELA and Math combined, and 24.6% exceeded it. The gap between those numbers matters: 29.1% of students are at the proficiency floor, while 24.6% pushed past it. Most rating sites report only the combined "proficient" number. SchoolScope surfaces the exceeded-vs-met split because it reveals whether a school's curriculum challenges students beyond minimum proficiency or paces toward it. 1,080 student-subject combinations were assessed.
How does Clayton Valley Charter High rank in California?
Clayton Valley Charter High ranks #370 among California high schools by Scope Score, placing it in the 83rd percentile. This ranking is based on a weighted composite of 2025 CAASPP test performance (exceeded and met rates), 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 Clayton Valley Charter High?
1.0% of students at Clayton Valley Charter High are chronically absent (missing 10% or more of school days), which is better than the California average of 30.2%. The suspension rate is 2.1%. 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 Clayton Valley Charter High compare to other schools in Concord?
Clayton Valley Charter High scores 59/100 (83rd percentile) among California high 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 2,373 students. Use the schools in Concord page or the map view to compare all high schools nearby.
How does Clayton Valley Charter High serve low-income and underrepresented students?
At Clayton Valley Charter High in Concord, 53.9% of low-income students met or exceeded the ELA standard in 2025, compared to 16.0% district-wide and 38.2% statewide. Clayton Valley Charter High outperforms its district average for low-income students by 37.9 percentage points in ELA. Other subgroups: Low-Income students (21.2% Math proficient); Hispanic students (65.0% ELA proficient). The largest proficiency gap is 30.5 percentage points for disabilities students. Data source: California Department of Education, CAASPP 2024-25. 117 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.
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