- Enrollment
- 1,653
- Students per teacher
- 21.8:1
- Resource Index
- 32/100
Middle school (grades 6-8) · Petaluma, CA
Petaluma Junior High
Federal NCES profile for Petaluma Junior High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 063025004724
👥 S:T ratio 18
🌟 Gifted program 70
🎓 Counselors 43
📋 Attendance 38
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Petaluma Junior High earns 42/100 on the Resource Investment Index, with class sizes near the California median.
- #3 of 3
- middle schools in Petaluma · Resource Index
- 42
- Resource Index · Typical
- 20.6:1
- students per teacher
- 31.3%
- free-lunch eligible
Petaluma Junior High has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Petaluma Junior High ranks #3 of 3 middle schools in Petaluma, CA.
School address
District: Petaluma Joint Union High · California
NCES ID 063025004724 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-23 students YoY
Petaluma Junior High shrank from 451 students in 2022-23 to 428 in 2023-24 (-5.1%).
Teacher FTE added 22.0 → 22.6 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-23 students YoY 063025004724 · Petaluma, CA Middle · SMALL · TRAD
454 enr · 20.6:1 · 31.3% lunch · RII 42
Nearest enrollment peer: Casa Grande High (1,653 students)
Petaluma Junior High shrank from 451 students in 2022-23 to 428 in 2023-24 (-5.1%). Teacher FTE added 22.0 → 22.6 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
Petaluma Junior High in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Casa Grande Hi
Casa Grande High
1,653 students
- Petaluma High
Petaluma High
1,193 students
- Kenilworth Jun
Kenilworth Junior High
812 students
- Mary Collins C 494
Mary Collins Charter School at Cherry Valley
494 students
- This school 454
Petaluma Junior High
454 students
- Petaluma Accel 115
Petaluma Accelerated Charter
115 students
What this shows Petaluma Junior High reports 454 students on the CCD universe file.
How Petaluma Junior High compares
Petaluma Junior High is a shrinking campus on CCD: ratios and free-lunch share vs California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.6:1 | ▼ 4% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 31.3% | ▼ 44% | 55.5% | 51.7% |
| Enrollment | 454 | top 52% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20.6:1
Leaner classes than 14% of US schools, heavier class loads than most.
454
Bigger than 55% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
31.3%
free-lunch eligible
- 44% below the California average of 55.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
20.6:1
students per teacher
- 4% below state mean
Top 40% in California - lower ratio than 60% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
24.9%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Support staff
Counselors1.6 FTE
Per 284 students, the combined health-and-guidance staffing load for this school.
Discipline context
8
in-school suspensions + 38 out-of-school
Suspension rate: 1.8 per 100 students. Combined in-school and out-of-school rate: 10.1 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 56.2%
Hispanic or Latino 35.2%
Two or More 4.9%
Asian 2.2%
American Indian / Alaska Native 0.9%
Native Hawaiian / Pacific Islander 0.4%
African American 0.2%
Largest group: White at 56.2% of enrollment.
Student-body diversity index 55.7/100
Simpson diversity index - at 55.7, Petaluma Junior High is more mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
How Petaluma Junior High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Casa Grande High | Larger | Similar economic need | Similar S:T ratio |
| Petaluma High | Larger | Similar economic need | Similar S:T ratio |
| Kenilworth Junior High | Larger | Similar economic need | Similar S:T ratio |
| Mary Collins Charter School at Cherry Valley | Similar size | Lower economic need | Higher S:T ratio |
| Petaluma Accelerated Charter | Smaller | Lower economic need | Higher S:T ratio |
Comparisons are relative to Petaluma Junior High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- 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
- 115
- Students per teacher
- 28.8:1
- Resource Index
- 51/100
Similar middle schools in Petaluma
2 comparable middle schools (grades 6-8) serving the same city.
Nationwide middle schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~454 students)
Frequently asked questions about Petaluma Junior High
How many students attend Petaluma Junior High?
Petaluma Junior High has 454 students enrolled. It is a middle school in Petaluma, CA. CCD year-over-year: 451 (2022-23) → 428 (2023-24), down 23.
What is the student-teacher ratio at Petaluma Junior High?
The student-teacher ratio at Petaluma Junior High is 20.6:1, which is 4% lower than the California average of 21.5:1 and 31% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Petaluma Junior High?
31.3% of students at Petaluma Junior High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Petaluma Junior High?
The largest demographic group at Petaluma Junior High is White at 56.2% of enrollment, in Petaluma, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 55.7/100.
What is the Resource Investment Index for Petaluma Junior High?
Petaluma Junior High has a Resource Investment Index of 42/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Petaluma Junior High rank among middle schools in Petaluma?
By Resource Investment Index, Petaluma Junior High ranks #3 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.
What other schools are in Petaluma Joint Union High?
Besides Petaluma Junior High, 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.