Charter SchoolElementary

Cinnabar Charter

286 Skillman Ln., Petaluma, CA 94952

CSchola Grade
Grades
K–8
Elementary
Students
156
Enrolled 2024–25
Students per teacher
16.4 : 1
Full-time teachers
District
Cinnabar Elementary
Sonoma County

Schola Grade C · Average

Letter grade (A–F) · compared with 5,632 California elementary schools · How we grade
Test scores27% proficient in math & reading
32ndpercentile
Equity24% of low-income students proficient
35thpercentile
Attendance27% chronically absent
53rdpercentile
Class size16.4 students per teacher
97thpercentile

Percentiles compare this school with other California elementary schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Cinnabar Charter

Cinnabar Charter is a charter elementary school in Petaluma, California, serving grades K–8. It is part of Cinnabar Elementary. The school is located in a small suburb in Sonoma County.

In the 2024–25 school year, 156 students were enrolled, with about 16.4 students for every full-time teacher. That ratio is smaller than the typical California elementary school (21.4 students per teacher). As a charter school, it is publicly funded and tuition-free, but operates independently of the local district under a charter from Cinnabar Elementary. Its Schola Grade is C (average), compared with 5,632 California elementary schools.

Grades & enrollment

Students per grade, 2024–25Grades K–8

Location & nearby schools

286 Skillman Ln.
Petaluma, CA 94952
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School details

Type
Charter School · What this means
Level
Elementary
Grades offered
K–8
Enrollment (2024–25)
156 students
Students per teacher
16.4 to 1
Charter school
Yes
Charter authorizer
Cinnabar Elementary
Magnet school
No
Locale
Suburb — Small
School district
Cinnabar Elementary
County
Sonoma County
NCES school ID
060870000884

Schools near Cinnabar Charter

All 45 schools in Petaluma →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.