Elementary school (grades K-5) · Petaluma, CA
River Montessori Elementary Charter
Federal NCES profile for River Montessori Elementary Charter, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 13/100.
The verdict
River Montessori Elementary Charter earns 13/100 on the Resource Investment Index, with class sizes larger than 71% of California schools.
- #25 of 25
- elementary schools in Petaluma · Resource Index
- 13
- Resource Index · Lower
- 24:1
- large classes for California
- 16.1%
- free-lunch eligible
River Montessori Elementary Charter has class sizes larger than 71% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, River Montessori Elementary Charter ranks #25 of 25 elementary schools in Petaluma, CA.
School address
NCES ID 060220412549 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-4 students YoY
River Montessori Elementary Charter held near 133 students from 2022-23 to 2023-24 (-4 headcount).
Teacher FTE held 7.0 → 7.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-4 students YoY 060220412549 · Petaluma, CA Elementary · SMALL · CHARTER
144 enr · 24:1 · 16.1% lunch · RII 13
Nearest enrollment peer: Bridgeport Middle School (144 students)
River Montessori Elementary Charter held near 133 students from 2022-23 to 2023-24 (-4 headcount). Teacher FTE held 7.0 → 7.0 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
How River Montessori Elementary Charter compares
River Montessori Elementary Charter held steady on CCD headcount: ratios and free-lunch share vs California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 24:1 | ▲ 12% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 16.1% | ▼ 71% | 55.5% | 51.7% |
| Enrollment | 144 | top 86% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
Equity indicators methodology
Student demographics
Largest group: White at 56.3% of enrollment.
Simpson diversity index - at 61.3, River Montessori Elementary Charter is more mixed than the California school average of 46.0.
Programs
District finance for River Montessori Elementary Charter District reports $16,467 per pupil (NCES F-33) - open the district page for the full revenue mix.
Similar elementary schools in Petaluma
6 comparable elementary schools (grades K-5) serving the same city.
Nationwide elementary 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 (~144 students)
Frequently asked questions about River Montessori Elementary Charter
How many students attend River Montessori Elementary Charter?
River Montessori Elementary Charter has 144 students enrolled. It is an elementary school in Petaluma, CA. CCD year-over-year: 137 (2022-23) → 133 (2023-24), nearly flat (-4).
What is the student-teacher ratio at River Montessori Elementary Charter?
The student-teacher ratio at River Montessori Elementary Charter is 24:1, which is 12% higher than the California average of 21.5:1 and 53% higher than the national average of 15.7:1.
What percentage of students receive free lunch at River Montessori Elementary Charter?
16.1% of students at River Montessori Elementary Charter are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of River Montessori Elementary Charter?
The largest demographic group at River Montessori Elementary Charter is White at 56.3% of enrollment, in Petaluma, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 61.3/100.
What is the Resource Investment Index for River Montessori Elementary Charter?
River Montessori Elementary Charter has a Resource Investment Index of 13/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does River Montessori Elementary Charter rank among elementary schools in Petaluma?
By Resource Investment Index, River Montessori Elementary Charter ranks #25 of 25 elementary 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 elementary schools in Petaluma on the city page.
What other schools are in River Montessori Elementary Charter District?
None; River Montessori Elementary Charter District is a single-school charter district, and River Montessori Elementary Charter is its only campus.