Excellent
#1350 of 9,539 schools in CA
Top 14% in state
River Montessori Elementary Charter
Elementary School · River Montessori Elementary Charter District
3880 Cypress Dr. Ste. B, Petaluma, CA 94954
Enrollment
133
Student-Teacher
22.2:1
Score
8.1
Grades
Kindergarten – 6th
Enrollment
133
Student-Teacher
22.2:1
Score
8.1
Grades
Kindergarten – 6th
Data vintage
2022-23
Data vintage2022-23
How this school compares
California schools
#1,350 of 9,539
In Petaluma
#2 of 30
public schools
Academic growth
10.0 / 10
Excellent
Shortlisting around River Montessori Elementary Charter?
Use this profile as one decision point, then compare nearby options, source confidence, and commute fit before picking a neighborhood around it.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
River Montessori Elementary Charter
Elementary School in Petaluma · grades Kindergarten – 6th. Start here, then compare fit against nearby and district options.
Cypress Primary School
0.0 mi away. Use as a geographic alternative in the same move search.
Cypress School
0.1 mi away. Use as a geographic alternative in the same move search.
About River Montessori Elementary Charter
River Montessori Elementary Charter is a public elementary school in Petaluma, CA, part of River Montessori Elementary Charter District. River Montessori Elementary Charter serves approximately 133 students, and covers grades Kindergarten-6th, and has a 22.2:1 student-teacher ratio. River Montessori Elementary Charter has a current MySchoolScout rating of 8.1 out of 10 and ranks #1,350 of 9,539 schools in CA.
Structured state assessment records for River Montessori Elementary Charter show 39% math proficiency (multi-year average, 2018-2024) and 60% reading/ELA proficiency (multi-year average, 2018-2024).
What's said publicly about River Montessori Elementary Charter
Synthesized from public, attributable sources. Updated May 2026. Reviewed for accuracy.
Sources (1)
- This school 8.1 · Excellent
- CA avg 6.2
What Parents Should Know
At 133 students, River Montessori Elementary Charter is on the smaller side. That usually buys more individual attention and teachers who know every kid by name, with the trade-off of fewer electives and extracurriculars than a larger school can staff. Ask what activities it actually offers.
River Montessori Elementary Charter runs 22.2:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.
River Montessori Elementary Charter is a charter school: publicly funded, but run with more independence than a traditional district school. Many charters are built around a specific model or focus, so it's worth understanding this one's mission, how enrollment works, and how it differs from the district schools nearby.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
River Montessori Elementary Charter — Students at River Montessori Elementary Charter score 57% proficient, which is below what's typical for similar communities (expected: 60%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
25.6%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 14 test records from CA state assessments. About our data
Proficiency Trend
↑ ImprovingAverage proficiency (% at or above grade level) across Math & ELA over time.
Source: EdFacts (NCES) and state assessment data. Growth score: 10.0/10.
How River Montessori Elementary Charter Compares
See how River Montessori Elementary Charter performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Location
3880 Cypress Dr. Ste. B, Petaluma, CA 94954
Nearby Alternatives
Families considering River Montessori Elementary Charter may also want to explore other elementary schools in the area. THE SPRING HILL SCHOOL (rated 8.6/10, 2.0 miles away), which scores slightly higher. Another option is McKinley Elementary (rated 7.5/10, 2.8 miles away), with a comparable rating. Additionally, Loma Vista Immersion Academy (rated 7.5/10, 3.0 miles away), with a comparable rating. For more schools in Petaluma, see our Petaluma schools guide .
Nearby Schools
20 within 3.2 mi| School | Distance | Rating |
|---|---|---|
| CYPRESS PRIMARY SCHOOL Petaluma | 0.0 mi | 5.9 |
| CYPRESS SCHOOL Petaluma | 0.1 mi | 6.3 |
| HARVEST CHRISTIAN SCHOOL Petaluma | 0.5 mi | 5.6 |
| Sonoma Mountain High (Continuation) Petaluma | 1.2 mi | — |
| Casa Grande High Petaluma | 1.3 mi | 6.5 |
| Miwok Valley Elementary Charter Petaluma | 1.5 mi | 4.3 |
| La Tercera Elementary Petaluma | 1.8 mi | 6.4 |
| THE SPRING HILL SCHOOL Petaluma | 2.0 mi | 8.6 |
| Old Adobe Elementary Charter Petaluma | 2.6 mi | 6.3 |
| McDowell Elementary Petaluma | 2.3 mi | 5.3 |
| Valley Oaks High (Alternative) Petaluma | 2.4 mi | 7.1 |
| San Antonio High (Continuation) Petaluma | 2.4 mi | 4.4 |
| Grant Elementary Petaluma | 2.4 mi | 7.3 |
| Live Oak Charter Petaluma | 2.6 mi | 6.4 |
| McKinley Elementary Petaluma | 2.8 mi | 7.5 |
| Petaluma Accelerated Charter Petaluma | 2.8 mi | 8.1 |
| McNear Elementary Petaluma | 2.7 mi | 5.7 |
| Loma Vista Immersion Academy Petaluma | 3.0 mi | 7.5 |
| South County Consortium Petaluma | 3.1 mi | 7.4 |
| Carpe Diem High (Continuation) Petaluma | 3.2 mi | — |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 94954 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$107,564
Median Home Value
$790,100
Median Rent
$2,405/mo
Population
38,000
College Educated
36.9%
Homeownership
66.7%
Avg Commute
31 min
Poverty Rate
5.9%
Median Age
44.8
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Ballard Elementary Solvang, CA | 8.1 |
| Dr. James Edward Jones Primary Center Los Angeles, CA | 8.1 |
| Lexington Elementary Los Gatos, CA | 8.1 |
| Marcum-Illinois Union Elementary East Nicolaus, CA | 8.1 |
| New Los Angeles Charter Elementary Los Angeles, CA | 8.1 |
| Robert F. Kennedy Elementary Los Angeles, CA | 8.1 |
Frequently Asked Questions
Common questions about River Montessori Elementary Charter
What grades does River Montessori Elementary Charter serve?
River Montessori Elementary Charter serves students in grades Kindergarten through 6th.
How many students attend River Montessori Elementary Charter?
River Montessori Elementary Charter has an enrollment of approximately 133 students.
What is the student-teacher ratio at River Montessori Elementary Charter?
The student-teacher ratio at River Montessori Elementary Charter is 22.2:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does River Montessori Elementary Charter rank in CA?
River Montessori Elementary Charter ranks #1,350 of 9,539 schools in CA.
What is River Montessori Elementary Charter's MySchoolScout rating?
River Montessori Elementary Charter has a current MySchoolScout rating of 8.1 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at River Montessori Elementary Charter?
Based on loaded state assessment records, River Montessori Elementary Charter has 39% math proficiency (multi-year average, 2018-2024) and 60% reading/ELA proficiency (multi-year average, 2018-2024).
Is River Montessori Elementary Charter a charter school?
Yes, River Montessori Elementary Charter is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.
Is River Montessori Elementary Charter a Title I school?
No, River Montessori Elementary Charter is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for River Montessori Elementary Charter?
25.6% of students at River Montessori Elementary Charter qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 6th
- Enrollment
- 133
- Student-Teacher Ratio
- 22.2:1
- Teachers (FTE)
- 6
- Free/Reduced Lunch
- 25.6%
- Type
- regular
- Setting
- Small City
- County
- Sonoma County
- Chronic Absenteeism (SY 2022-23)
- 41.4%
- Phone
- (707) 778-6414
Resources & Links
District
River Montessori Elementary Charter District- District Enrollment
- 133
- Schools in District
- 1
- Per-Pupil Spending
- $16,467
- District Rank
- #1 of 1
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateRelated reading
- Best Elementary Schools in America: 2026 Rankingsbest schools
- Best Public Schools in California 2026: Top-Ranked Elementary, Middle & High Schoolsbest schools
- Best School Districts to Move To in 2026: A Data-Driven Guidebest schools
- Best Schools in Los Angeles, CA — 2026 Rankingsbest schools
- Best Schools in San Diego, CA — 2026 Rankingsbest schools
Get school insights in your inbox
New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.
We respect your privacy. Unsubscribe at any time.