Cinnabar Charter

· Sonoma County · Cinnabar Elementary
Public Sonoma County 🏛 Cinnabar Elementary → CDS 4970649…
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Compare with peers

Most similar nearby schools

River Montessori Elementary Charter → Petaluma Accelerated Charter → Dunham Charter → Live Oak Charter → Tomales High School → Compare all similar →

No UC admissions data on file for Cinnabar Charter.

This school doesn't appear in UCOP's source-school records (it may send few or no applicants to UC). Its enrollment trend and similar-school comparison are still below.

Enrollment trend & projection

Total enrollment
243 (2018)151 (2026)
-37.9%

If this trend holds (-5.8%/yr, Total enrollment)

At per-pupil funding of $ / student:

Horizon Projected Total enrollment Change Funding impact / yr
1 yr (2027) ~142 -9 $0
3 yr (2029) ~126 -25 $0
5 yr (2031) ~112 -39 $0

Straight-line extrapolation of the recent annual rate — a what-if, not a forecast of intent. Default = California's LCFF base grant for grades 9–12 ($12,423/ADA). Edit the figure to match your school.

Enrollment stability & demand — 2024-25

Two complementary signals: retention (do students stay once enrolled?) and demand (are families choosing the school?). Read against the Sonoma County baseline — the demographic tide is moving every CA HS, so a school's gap vs. county is the actionable signal.

Stability rate
88.6%
148 of 167 students

19 of 167 students who enrolled at Cinnabar Charter this year didn't maintain continuous enrollment (11.4% non-stability). Mid-year transfers, dropouts, and other exits are all counted.

Sonoma County median
92.0% · school is in the 17th percentile of 59 HS
Statewide median
88.7% · in the 50th percentile of 2,648 HS

Stability by student group

Socio. disadvantaged (141) 88.7%
Hispanic / Latino (134) 90.3%
English learners (64) 93.8%
Students w/ disabilities (31) 96.8%
White (25) 76.0%

Nearest peer high schools

River Montessori Elementary Charter 94.0% Petaluma Accelerated Charter 90.8% Dunham Charter 90.1% Live Oak Charter 94.0% Tomales High School 95.3%

Source: California Department of Education, Stability Rate 2024-25. Benchmarks limited to non-virtual public & charter HS with ≥100 cumulative enrollees so by-design-high-churn continuation schools don't dominate the bottom of the distribution. Cumulative enrollment counts every student on the rolls during the year, so it can exceed peak-day enrollment.

Chronic absenteeism — 2024-25

Share of students missing 10% or more of expected attendance — the leading indicator that often precedes the demand decline shown above. Families disengaging tend to raise absenteeism first, then formally leave. Basis: total enrollment.

Chronic absent
20.9%
34 of 163 students

Absenteeism is up 12.9 pp since 2016-17. A rising absenteeism trend often precedes formal departure — worth investigating which subgroups are driving it.

Sonoma County median
17.5% · school is worse than 60% of 58 HS
Statewide median
20.9%
Chronic absenteeism by year (raw %)

Source: California Department of Education, Chronic Absenteeism 2024-25. Benchmarks limited to non-virtual public & charter HS with ≥100 eligible students. CDE didn't publish a usable 2019-20 file (COVID).

Cinnabar Charter — Enrollment & Outcomes Snapshot

Public · vs. 10 most similar nearby schools

  • At its recent rate (-5.8%/yr), enrollment projects to ~126 by 2029 — about 25 fewer students than today.

Enrollment projection

151 students (2026)
~126 projected (2029)
at -5.8%/yr

That's about 25 fewer students. At per-student funding of $ per student, that's roughly $0 in annual state funding at risk.

Default = California's LCFF base grant for grades 9–12 ($12,423 per ADA) — adjust to your district's actual per-pupil figure. Projection extrapolates the recent annual rate — not a forecast of intent.

Your school vs. its 10 most similar nearby schools

School Type Size UC Reach Enroll. trend
Cinnabar Charter Public 151
Peer-group median 12.2% +28%
River Montessori Elementary Charter Public 141
Petaluma Accelerated Charter Public 113
Dunham Charter Public 167
Live Oak Charter Public 271
Tomales High School Public 134 12.2% +28%
Old Adobe Elementary Charter Public 268
Miwok Valley Elementary Charter Public 274
Kid Street Charter Public 122
Salmon Creek School - A Charter Public 139
Santa Rosa Accelerated Charter Public 128

UC Reach = top-6 UC admits ÷ senior class (can exceed 100% when students are admitted to multiple campuses). Enrollment trend = first-to-latest grade-12 change on file. Similar schools matched on proximity, size, type. Methodology →

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