Enrollment
144
Elementary
STATE 465
SCHOOL COMMUNITY·RIVER MONTESSORI ELEMENTARY CHARTER DISTRICT·NCES 060220412549
River Montessori Elementary Charter
3880 Cypress Dr. Ste. B, Petaluma, CA 94954 · (707) 778-6414 · Sonoma County
GRADES KG–06ELEMENTARY13-CITYCHARTERREGULAR SCHOOL144 STUDENTS
·
allk12 Grade
Not graded
This school has no state test results for 2023-24 or 2024-25 to grade, which is common for schools that end before third grade. How grades work
Student : Teacher
24.1:1
6 FTE teachers
STATE 22.3:1
Free / Reduced Lunch
24%
35 students
STATE 65%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 48 | 33% |
| Grade 1 | 19 | 13% |
| Grade 2 | 22 | 15% |
| Grade 3 | 21 | 15% |
| Grade 4 | 18 | 13% |
| Grade 5 | 13 | 9% |
| Grade 6 | 3 | 2% |
Student demographics
61%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
STATE 62% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
QUIET COMMUNITY
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START A DISCUSSIONSchools most like River Montessori Elementary Charter
| School | Students | Low-income | Proficient |
|---|---|---|---|
| River Montessori Elementary Charter this school | 144 | 24.3% | N/A |
| Browns Elementary Rio Oso | 143 | 29.4% | 38.1% |
| Kenwood Elementary Kenwood | 124 | 24.2% | 63.3% |
| Tierra Pacifica Charter Santa Cruz | 166 | 28.9% | 50.4% |
| Ross Valley Charter Fairfax | 198 | 24.7% | N/A |
| Los Olivos Elementary Los Olivos | 159 | 18.9% | 57.2% |
Matched among California elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where River Montessori Elementary Charter ranks
Among elementary schools| Measure | This school | In California | In Sonoma County |
|---|---|---|---|
| Enrollment ranked largest first | 144 | #5,530 of 5,915 | #82 of 105 |
| Free and reduced lunch ranked highest share first | 24.3% | #4,994 of 5,625 | #79 of 89 |
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
144
-12 (-8%) vs 2020
Student : Teacher
24.1:1
was 22.3:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 144 | 6 | 24.1:1 | 24% (35) |
| 2023-24 | 133 | 7 | 19.1:1 | 26% (34) |
| 2022-23 | 137 | 7 | 19.7:1 | 20% (27) |
| 2020-21 | 156 | 7 | 22.3:1 | 19% (29) |
Source: NCES Common Core of Data. Rows are the federal collections on file for River Montessori Elementary Charter.
About River Montessori Elementary Charter
River Montessori Elementary Charter is a small elementary school serving families in Petaluma, California. The latest federal count shows 144 students in kindergarten through 6. Against the 465-student average for elementary schools in California, enrollment here is 69% lower.
For district matters, River Montessori Elementary Charter falls under River Montessori Elementary Charter District.
At River Montessori Elementary Charter, White students make up 56% of the student body. After that, the student body is 20% Hispanic, 16% multiracial, 6% Asian, and 2% Black. Pick two students at random and there is a 61% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.
River Montessori Elementary Charter employs 6 full-time-equivalent teachers. That gives a ratio of about 24.1:1. This ratio sits 1.8 above the 22.3:1 average for elementary schools in California. Free or reduced-price lunch eligibility was 24% in 2024-25. That is 27 points below the 51% average for public schools in Sonoma County.
Federal survey data for Sonoma County show that the median household income is $104,674, roughly 39% of adults have a four-year degree or more, and about 5% of residents live below the federal poverty line. There are 184 public schools in Sonoma County, enrolling about 63,389 students in all.
Nearby, Sonoma Mountain High (Necessary Small School) is about 1.2 miles away. Within five miles of River Montessori Elementary Charter, there are at least 8 other public schools.
In the federal locale system, River Montessori Elementary Charter is coded City: Small, for schools inside a principal city with a population under 100,000. The school is classified as a charter school in federal data.
Compared with 2020-21, the school had 12 fewer students in 2024-25. By 2024-25, the school had 24.1 students per teacher, compared with 22.3 in 2020-21.
Questions about school safety, transportation, and start times can be posted here. Reviews and ratings from people who know the school are welcome.
Sonoma County at a glance
View full county profilePopulation
485,040
Census ACS
Median income
$104,674
Household, ACS
Bachelor's+
39%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
184
63,389 students
Quick facts
Related schools
Other schools in Petaluma
- Casa Grande HighHigh · 1,653 students
- Petaluma HighHigh · 1,193 students
- Kenilworth Junior HighMiddle · 812 students
- Heartwood CharterCombined · 739 students
- Mary Collins Charter School at Cherry ValleyElementary · 494 students
- Petaluma Junior HighMiddle · 454 students
Nearby schools
- Sonoma Mountain High (Necessary Small School)1.2 mi · 21
- Casa Grande High1.3 mi · 1,653
- Miwok Valley Elementary Charter1.5 mi · 288
- La Tercera Elementary1.8 mi · 295
- McDowell Elementary2.3 mi · 329
- Dual Language Immersion Academy Charter2.3 mi · 31
Frequently asked questions
About River Montessori Elementary CharterHow large is River Montessori Elementary Charter?
River Montessori Elementary Charter enrolls approximately 144 students in grades KG-06.
Is River Montessori Elementary Charter an elementary, middle, or high school?
River Montessori Elementary Charter is an elementary school covering grades KG-06.
How many students per teacher at River Montessori Elementary Charter?
Approximately 24.1:1 students per teacher at River Montessori Elementary Charter.
What is the racial breakdown of students at River Montessori Elementary Charter?
At River Montessori Elementary Charter, the student body is approximately 56% White, 20% Hispanic, 2% Black, 6% Asian, 16% Two or more.
Who oversees River Montessori Elementary Charter?
River Montessori Elementary Charter is overseen by River Montessori Elementary Charter District in Sonoma County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.