Enrollment
115
California · 2024-25 NCES data
Middle school (grades 6-8) · Petaluma, CA
Petaluma Accelerated Charter
Federal NCES profile for Petaluma Accelerated Charter, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 51/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 063025013937Charter school
👥 S:T ratio 0
🌟 Gifted program 70
📋 Attendance 83
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Petaluma Accelerated Charter earns 51/100 on the Resource Investment Index, with class sizes larger than 94% of California schools.
- #1 of 3
- middle schools in Petaluma · Resource Index
- 51
- Resource Index · Higher
- 28.8:1
- large classes for California
- 8.1%
- free-lunch eligible
Petaluma Accelerated Charter has class sizes larger than 94% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Petaluma Accelerated Charter ranks #1 of 3 middle schools in Petaluma, CA.
School address
District: Petaluma Joint Union High · California
NCES ID 063025013937 Verify on NCES CCD record →
Teachers (FTE)
4.0
Federal CCD staff survey
Students per teacher
28.8:1
vs 21.5:1 California avg
+34% vs state
Free-lunch eligible
8.1%
vs 55.5% California avg
-85% vs state
Student-teacher ratio in context
How Petaluma Accelerated Charter compares with California and U.S. medians
What stands out at Petaluma Accelerated Charter
Petaluma Accelerated Charter is a lower-poverty, small charter middle school in Petaluma, California, enrolling 115 students.
Class loads run heavy: 28.8:1 is larger than about 94% of California schools and 34% above the 21.5:1 state mean, so each teacher carries more students than is typical.
Comparatively few students face economic hardship here, 8.1% free-meal eligibility runs 85% below the California average.
Enrollment of 115 puts it in the smaller third of California schools by headcount.
Its Resource Investment Index outscores 93% of the 9,998 California schools with a score on record, a top-tier result on this measure.
Against 37 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #5.
Its student body is led by White (53%) and Hispanic or Latino (30%) (diversity index 62/100).
Attendance holds up well here: only 7.0% of students were chronically absent, below the typical post-pandemic national figure.
Among Petaluma's middle schools, it stands alongside Kenilworth Junior High (812 students): Petaluma Accelerated Charter is smaller than that campus by headcount and runs heavier classes (28.8:1 vs 21.4:1).
Petaluma Joint Union High also operates Casa Grande High (1,653 students) and Petaluma High (1,193 students) alongside Petaluma Accelerated Charter.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Petaluma Accelerated Charter compares
Petaluma Accelerated Charter on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 28.8:1 | ▲ 34% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 8.1% | ▼ 85% | 55.5% | 51.7% |
| Enrollment | 115 | top 89% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
28.8:1
Leaner classes than 2% of US schools, heavier class loads than most.
115
Bigger than 11% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
8.1%
free-lunch eligible
- 85% below the California average of 55.5%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
28.8:1
students per teacher
- 34% above state mean
Top 94% in California - lower ratio than 6% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
7.0%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 53.0%
Hispanic or Latino 29.6%
Asian 8.7%
Two or More 7.0%
African American 0.9%
American Indian / Alaska Native 0.9%
Largest group: White at 53.0% of enrollment.
Student-body diversity index 61.9/100
Simpson diversity index - at 61.9, Petaluma Accelerated Charter is more mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
How Petaluma Accelerated Charter Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Casa Grande High | Larger | Higher economic need | Lower S:T ratio |
| Petaluma High | Larger | Higher economic need | Lower S:T ratio |
| Kenilworth Junior High | Larger | Higher economic need | Lower S:T ratio |
| Mary Collins Charter School at Cherry Valley | Larger | Similar economic need | Similar S:T ratio |
| Petaluma Junior High | Larger | Higher economic need | Lower S:T ratio |
Comparisons are relative to Petaluma Accelerated Charter's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,653
- Students per teacher
- 21.8:1
- Resource Index
- 32/100
- Enrollment
- 1,193
- Students per teacher
- 20.9:1
- Resource Index
- 44/100
- Enrollment
- 812
- Students per teacher
- 21.4:1
- Resource Index
- 50/100
- Enrollment
- 494
- Students per teacher
- 29.1:1
- Resource Index
- 37/100
- Enrollment
- 454
- Students per teacher
- 20.6:1
- Resource Index
- 42/100
Similar middle schools in Petaluma
2 comparable middle schools (grades 6-8) serving the same city.
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~115 students)
Similar student-teacher ratio (~28.8:1)
Next steps
Verify locally before acting on Petaluma Accelerated Charter's federal record.
- Compare Petaluma Accelerated Charter against another school. Compare schools
- Petaluma Joint Union High's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Petaluma Accelerated Charter
How many students attend Petaluma Accelerated Charter?
Petaluma Accelerated Charter has 115 students enrolled. It is a middle school in Petaluma, CA.
What is the student-teacher ratio at Petaluma Accelerated Charter?
The student-teacher ratio at Petaluma Accelerated Charter is 28.8:1, which is 34% higher than the California average of 21.5:1 and 83% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Petaluma Accelerated Charter?
8.1% of students at Petaluma Accelerated Charter are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Petaluma Accelerated Charter?
The largest demographic group at Petaluma Accelerated Charter is White at 53.0% of enrollment, in Petaluma, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 61.9/100.
What is the Resource Investment Index for Petaluma Accelerated Charter?
Petaluma Accelerated Charter has a Resource Investment Index of 51/100 (higher reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Petaluma Accelerated Charter rank among middle schools in Petaluma?
By Resource Investment Index, Petaluma Accelerated Charter ranks #1 of 3 middle schools in Petaluma, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Petaluma on the city page.
Is Petaluma Accelerated Charter a good school?
Petaluma Accelerated Charter earns 51/100 on the Resource Investment Index, with class sizes larger than 94% of California schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Petaluma Joint Union High?
Besides Petaluma Accelerated Charter, Petaluma Joint Union High also operates Casa Grande High (1,653 students), Petaluma High (1,193 students), and Kenilworth Junior High (812 students). See the Petaluma Joint Union High district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.