Below Average
#8773 of 9,533 schools in CA
Cinnabar Charter
Elementary School · Cinnabar Elementary
286 Skillman Ln., Petaluma, CA 94952
Enrollment
160
Student-Teacher
17.8:1
Score
4.1
Grades
Kindergarten – 8th
Enrollment
160
Student-Teacher
17.8:1
Score
4.1
Grades
Kindergarten – 8th
Updated
2022-23
Updated 2022-23
How this school compares
In Petaluma
#27 of 30
public schools
California elementary schools
#5,241 of 5,817
School environment
8.8 / 10
Exceptional
About Cinnabar Charter
Cinnabar Charter is a charter school located in Petaluma, California, within Sonoma County. Serving kindergarten through eighth grade students, the school has an enrollment of 160 pupils and maintains a student-teacher ratio of 17.8:1 with nine full-time equivalent teachers. Cinnabar Charter focuses on providing a supportive educational environment for its diverse student body.
The academic performance at Cinnabar Charter shows room for improvement, as indicated by the MySchoolScout rating of 3.2 out of 10 and a state ranking of #8277 out of 9566 schools in California (14th percentile). In terms of standardized test scores, only 27% of students are proficient or above in English Language Arts/Reading, while 16% are proficient or above in Math. Despite these challenges, the school remains committed to fostering an engaging and nurturing learning atmosphere for its students.
Cinnabar Charter is situated in a small suburban area, offering a close-knit community feel with easy access to local amenities and resources.
What Parents Should Know
With an enrollment of 160 students, Cinnabar Charter is a smaller school where families often find a close-knit community atmosphere. Smaller settings can mean more individual attention from teachers and staff, though they may offer fewer extracurricular options than larger schools.
Cinnabar Charter is a charter school — a publicly funded school that operates with more autonomy than traditional district schools. Charter schools often have distinct educational models or specialties. Parents should understand the school's specific mission, enrollment process, and how its approach differs from nearby district options.
Score Breakdown
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Data not available for this school
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Cinnabar Charter — Students at Cinnabar Charter score 20% proficient, which is below what's typical for similar communities (expected: 27%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
84.4%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 16 test records from CA state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
Source: EdFacts (NCES) and state assessment data. Growth score: 2.1/10.
How Cinnabar Charter Compares
See how Cinnabar Charter performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 22% (2019) to 15.52% (2024). Reading/ELA proficiency has declined from 52% (2019) to 25% (2024).
Location
286 Skillman Ln., Petaluma, CA 94952
Nearby Alternatives
Families considering Cinnabar Charter may also want to explore other elementary schools in the area. Corona Creek Elementary (rated 7.6/10, 1.4 miles away), which scores notably higher. Another option is Meadow Elementary (rated 7.5/10, 1.2 miles away), which scores notably higher. Additionally, Sonoma Mountain Elementary (rated 7.5/10, 2.0 miles away), which scores notably higher. For more schools in Petaluma, see our Petaluma schools guide .
Nearby Schools
20 within 2.1 mi| School | Distance | Rating |
|---|---|---|
| Cinnabar Elementary Petaluma | 0.0 mi | — |
| Mary Collins Charter School at Cherry Valley Petaluma | 1.2 mi | 7.3 |
| Saint Vincent de Paul College Preparatory Petaluma | 1.3 mi | — |
| ST VINCENT DE PAUL HIGH SCHOOL Petaluma | 1.3 mi | 7.6 |
| Meadow Elementary Petaluma | 1.2 mi | 7.5 |
| Corona Creek Elementary Petaluma | 1.4 mi | 7.6 |
| Wilson Elementary Petaluma | 1.5 mi | 4.2 |
| Petaluma Junior High Petaluma | 1.9 mi | 5.4 |
| Kenilworth Junior High Petaluma | 1.6 mi | 5.9 |
| Valley Vista Elementary Petaluma | 1.9 mi | 4.2 |
| ST VINCENT DE PAUL ELEMENTARY SCHOOL Petaluma | 1.9 mi | 4.9 |
| The Spring Hill School Petaluma | 2.0 mi | — |
| McKinley Elementary Petaluma | 2.0 mi | 3.0 |
| Petaluma Accelerated Charter Petaluma | 2.0 mi | 5.9 |
| South County Consortium Petaluma | 2.3 mi | 6.9 |
| Sonoma Mountain Elementary Petaluma | 2.0 mi | 7.5 |
| Petaluma High Petaluma | 2.4 mi | 5.7 |
| Carpe Diem High (Continuation) Petaluma | 2.5 mi | — |
| BRIGHT SKIES MONTESSORI SCHOOL Penngrove | 2.6 mi | — |
| Loma Vista Immersion Academy Petaluma | 2.1 mi | 3.7 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 94952 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$115,097
Median Home Value
$1,016,800
Median Rent
$2,272/mo
Population
33,339
College Educated
47.5%
Homeownership
59.9%
Avg Commute
28.3 min
Poverty Rate
6.6%
Median Age
44.5
Community Profile
The community surrounding Cinnabar Charter has a median household income of $115,097. It is a well-educated community where 48% of adults hold a bachelor's degree or higher. The median home value in the area is $1,016,800, with a median rent of $2,272/month. The local poverty rate of 6.6% is relatively low. The average commute for residents is 28 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| COUNTRY CHRISTIAN SCHOOL Bakersfield, CA | 4.1 |
| Lake Marie Elementary Whittier, CA | 4.1 |
| Richmond Elementary Susanville, CA | 4.1 |
| Santa Ynez Valley Charter Santa Ynez, CA | 4.1 |
| Achieve Charter School of Chico Chico, CA | 4.0 |
| Copperopolis Elementary Copperopolis, CA | 4.0 |
Frequently Asked Questions
Common questions about Cinnabar Charter
What grades does Cinnabar Charter serve?
Cinnabar Charter serves students in grades Kindergarten through 8th.
How many students attend Cinnabar Charter?
Cinnabar Charter has an enrollment of approximately 160 students.
What is the student-teacher ratio at Cinnabar Charter?
The student-teacher ratio at Cinnabar Charter is 17.8:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Cinnabar Charter rank in CA?
Cinnabar Charter is ranked #8773 out of 9,533 schools in CA.
What is Cinnabar Charter's MySchoolScout rating?
Cinnabar Charter has a composite rating of 4.1 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Cinnabar Charter?
Based on the most recent state assessment data, Cinnabar Charter has 15.8% math proficiency and 27.4% reading/ELA proficiency.
Is Cinnabar Charter a charter school?
Yes, Cinnabar Charter is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.
Is Cinnabar Charter a Title I school?
No, Cinnabar Charter is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Cinnabar Charter?
84.4% of students at Cinnabar 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.
Explore More Schools
Neighborhood Context
- City Safety
- Elevated (1,469/100K)
FBI UCR 2024. City-level (Petaluma). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 8th
- Enrollment
- 160
- Student-Teacher Ratio
- 17.8:1
- Teachers (FTE)
- 9
- Free/Reduced Lunch
- 84.4%
- Type
- regular
- Setting
- Small Suburb
- County
- Sonoma County
- Phone
- (707) 765-4345
- Data Year
- 2023–2024
Resources & Links
District
Cinnabar Elementary- District Enrollment
- 176
- Schools in District
- 2
- Per-Pupil Spending
- $19,638
- District Rank
- #1 of 1
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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