Beta You're viewing our redesigned school page. Prefer the classic layout?

Cinnabar Charter

Public, Charter Grades K-8

4719^th

SchoolDigger Rank ?

of 5,857 California Elementary Schools

Better than 19% of California elementary schools

Summary

Cinnabar Charter is a K-8 public charter school serving 156 students in Petaluma, California, operating within the Cinnabar Elementary district, which ranks in the bottom 7% of all districts in the state.

Academic performance at the school is significantly below state averages, with only 30% of students proficient in English and 17% in math, and it has experienced a sharp decline from a 4-star to a 1-star rating over the past decade. The school serves a student population with high economic need, with over 83% eligible for free or reduced-price lunch, and faces a chronic absenteeism rate of 21%, which is higher than both the district and state averages. Interestingly, despite spending more per student ($16,931) and having a lower student-teacher ratio than several higher-performing neighbors, these resources have not translated into stronger academic outcomes.

The situation at Cinnabar Charter presents a notable contrast, as it is surrounded by several high-performing schools like Meadow Elementary and Sonoma Mountain Elementary, which achieve much higher test scores with lower chronic absenteeism. This comparison extends to other local charter schools, such as Live Oak Charter and Mary Collins Charter School at Cherry Valley, which also perform significantly better, indicating that challenges are specific to Cinnabar's programs and context rather than being inherent to charter schools or the area.

156

Students ?

16.4

Student/teacher ratio ?

$16,931

Per pupil spending ?

83.3%

Free/discounted lunch ?

286 Skillman Ln.
Petaluma, CA 94952-1226

(707) 765-4345

District: Cinnabar Elementary

Students who attend Cinnabar Charter usually attend:

Middle:	Petaluma Junior High
High:	Petaluma High

Racial breakdown:

Hispanic:

80.1%

White:

14.7%

Two or more races:

3.2%

See top rated California elementary schools

Compare Cinnabar Charter to nearby elementary schools!

At a glance

▼ Ranking trend: Declining — 76th percentile in 2013 → 19th in 2025

Worth a look

!Test scores below the California average (23% vs 41% meeting standards)

!In the lower quartile statewide (19th percentile)

!Ranking has slipped — down 57 percentile points since 2013

Students meeting standards (2024-2025) ?

This school23%

District avg23%

California avg41%

Elementary school

4,719^th of 5,857

California public elementary schools ?

Bottom 19%▼ down 24 pts since 2015

From bottom 44% (2015) to bottom 19% (2025)

See the entire ranking list of California Elementary Schools →

★★★★★

SchoolDigger rating ?

Middle school

2,459^th of 2,761

California public middle schools ?

Bottom 11%▼ down 35 pts since 2015

From bottom 46% (2015) to bottom 11% (2025)

See the entire ranking list of California Middle Schools →

★★★★★

SchoolDigger rating ?

1428^th of 1,543Cinnabar Elementary among California districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Elementary school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2025	21.3	4719 of 5857	19.4%	★☆☆☆☆
2024	18.4	4994 of 5869	14.9%	★☆☆☆☆
2023	24.7	4382 of 5859	25.2%	★☆☆☆☆
2022	27.8	4070 of 5883	30.8%	★★☆☆☆
2019	38.8	3257 of 5789	43.7%	★★☆☆☆
2018	39.8	3154 of 5662	44.3%	★★☆☆☆
2017	44.4	2842 of 5692	50.1%	★★★☆☆
2016	49.3	2520 of 5614	55.1%	★★★☆☆
2015	37.6	3163 of 5611	43.6%	★★☆☆☆
2013	74.9	1329 of 5530	76.0%	★★★★☆
2012	51.4	2532 of 5390	53.0%	★★★☆☆
2011	43.1	3020 of 5377	43.8%	★★☆☆☆
2010	30.3	3826 of 5314	28.0%	★☆☆☆☆
2009	31.8	3567 of 5193	31.3%	★★☆☆☆
2008	23.3	4091 of 5113	20.0%	★☆☆☆☆
2007	33.7	3319 of 5113	35.1%	★★☆☆☆
2006	51.5	2115 of 4818	56.1%	★★★☆☆
2005	60.0	1742 of 4822	63.9%	★★★☆☆
2004	53.8	1968 of 4809	59.1%	★★★☆☆

English Language Learner

Year	Avg score	Statewide rank	California percentile	Rating
2024	55.6	903 of 3162	71.4%	★★★★☆
2023	31.4	2439 of 3245	24.8%	★☆☆☆☆
2022	68.5	513 of 3311	84.5%	★★★★☆
2019	52.1	1142 of 3275	65.1%	★★★☆☆
2018	68.5	595 of 3246	81.7%	★★★★☆

Female

Year	Avg score	Statewide rank	California percentile	Rating
2025	27.4	4054 of 5597	27.6%	★☆☆☆☆
2024	20.9	4631 of 5612	17.5%	★☆☆☆☆
2023	22.6	4465 of 5609	20.4%	★☆☆☆☆
2022	19.8	4735 of 5635	16.0%	★☆☆☆☆
2019	48.6	2573 of 5492	53.2%	★★★☆☆
2018	52.0	2376 of 5413	56.1%	★★★☆☆

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2025	23.3	4216 of 5107	17.4%	★☆☆☆☆
2024	22.7	4306 of 5107	15.7%	★☆☆☆☆
2023	23.4	4216 of 5087	17.1%	★☆☆☆☆
2022	33.8	3390 of 5084	33.3%	★★☆☆☆
2019	35.6	3273 of 4963	34.1%	★★☆☆☆
2018	46.9	2410 of 4830	50.1%	★★★☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2025	16.7	4944 of 5460	9.5%	☆☆☆☆☆
2024	24.6	4407 of 5517	20.1%	★☆☆☆☆
2023	25.4	4266 of 5363	20.5%	★☆☆☆☆
2022	38.5	3128 of 5264	40.6%	★★☆☆☆
2019	54.5	2102 of 5173	59.4%	★★★☆☆
2018	45.9	2623 of 5084	48.4%	★★☆☆☆

Male

Year	Avg score	Statewide rank	California percentile	Rating
2024	14.5	5194 of 5643	8.0%	☆☆☆☆☆
2023	23.8	4366 of 5638	22.6%	★☆☆☆☆
2022	35.6	3307 of 5663	41.6%	★★☆☆☆
2019	25.3	4156 of 5510	24.6%	★☆☆☆☆
2018	23.3	4248 of 5431	21.8%	★☆☆☆☆

Middle school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2025	14.6	2459 of 2761	10.9%	★☆☆☆☆
2024	16.1	2435 of 2783	12.5%	★☆☆☆☆
2023	32.3	1714 of 2781	38.4%	★★☆☆☆
2022	35.4	1606 of 2740	41.4%	★★☆☆☆
2019	49.0	1177 of 2715	56.6%	★★★☆☆
2018	25.0	1813 of 2480	26.9%	★☆☆☆☆
2017	36.1	1511 of 2508	39.8%	★★☆☆☆
2016	45.8	1225 of 2497	50.9%	★★★☆☆
2015	40.3	1329 of 2477	46.3%	★★☆☆☆

English Language Learner

Year	Avg score	Statewide rank	California percentile	Rating
2023	31.7	1134 of 1521	25.4%	★☆☆☆☆
2022	76.2	140 of 1540	90.9%	★★★★★

Female

Year	Avg score	Statewide rank	California percentile	Rating
2023	26.8	1792 of 2531	29.2%	★☆☆☆☆
2022	28.8	1696 of 2509	32.4%	★★☆☆☆
2019	53.1	978 of 2380	58.9%	★★★☆☆
2018	24.3	1695 of 2262	25.1%	★☆☆☆☆

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2025	23.4	1888 of 2395	21.2%	★☆☆☆☆
2024	21.8	1948 of 2388	18.4%	★☆☆☆☆
2023	23.3	1884 of 2374	20.6%	★☆☆☆☆
2022	36.5	1406 of 2359	40.4%	★★☆☆☆
2019	49.4	958 of 2213	56.7%	★★★☆☆
2018	33.3	1383 of 2072	33.3%	★★☆☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2025	23.9	2000 of 2542	21.3%	★☆☆☆☆
2024	22.4	2089 of 2579	19.0%	★☆☆☆☆
2023	34.5	1554 of 2531	38.6%	★★☆☆☆
2022	58.5	770 of 2458	68.7%	★★★☆☆
2019	67.3	557 of 2369	76.5%	★★★★☆

Male

Year	Avg score	Statewide rank	California percentile	Rating
2023	34.3	1518 of 2538	40.2%	★★☆☆☆
2022	42.7	1258 of 2527	50.2%	★★★☆☆
2019	45.3	1143 of 2407	52.5%	★★★☆☆
2018	25.2	1681 of 2273	26.0%	★☆☆☆☆

White

Year	Avg score	Statewide rank	California percentile	Rating
2022	34.3	1025 of 1555	34.1%	★★☆☆☆
2019	48.4	811 of 1602	49.4%	★★☆☆☆
2018	12.3	1349 of 1496	9.8%	☆☆☆☆☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

Elementary school

English Language Learner (2024)71st percentile+57 vs school

Female (2025)28th percentile+8 vs school

Hispanic (2025)17th percentile~ school

Low Socio Economic Status (2025)9th percentile-10 vs school

Male (2024)8th percentile-7 vs school

Middle school

Male (2023)40th percentile~ school

White (2022)34th percentile-7 vs school

Female (2023)29th percentile-9 vs school

English Language Learner (2023)25th percentile-13 vs school

Low Socio Economic Status (2025)21st percentile+10 vs school

Hispanic (2025)21st percentile+10 vs school

By subject vs California (2024-2025) ?

English Language Arts/Literacy30%-18 vs state

Science17%-16 vs state

Mathematics16%-21 vs state

5.0

1 rating · 1 written review

5★1

4★0

3★0

2★0

1★0

Rate Cinnabar Charter

Have first-hand experience? A quick rating - and a sentence or two about what stands out (teachers, academics, safety, communication) - helps other families know what to expect.

Takes about a minute. We email you a link to verify your review - your address is never shown publicly.

Tap a star to rate

What people are saying

by a parent
Monday, August 24, 2020

My Children were late starting school do to situations beyond our control, so they started at a lower grade for their age group. Cinnabar never hesitated to help get them started and placed them in the appropriate grades that were needed for each of my children. None of the staff or teachers ever looked down at my children or myself and have been very supportive to us and made me feel just as important and appreciated as all the other parents and kids. they have been a real help for us, and I know my children are safe and learning to the best of their abilities, with room to grow at the right pace. I strongly recommend Cinnabar School to EVERYONE I know who have children. Close Quote

Schools Near Cinnabar Charter

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Immunizations Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				CAST Science (2025)			Smarter Balanced Assessments English Language Arts/Literacy (2025)							Smarter Balanced Assessments Mathematics (2025)							% Completely Immunized (2022)	% Polio (2022)	% Hepatitis B (2022)	% Varicella (2022)	% DTP (2022)	% MMR (2022)	Per Pupil Expenditures (2024)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	CAST Science 5th Grade	CAST Science 8th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 3rd Grade	Smarter Balanced Assessments English Language Arts/Literacy 4th Grade	Smarter Balanced Assessments English Language Arts/Literacy 5th Grade	Smarter Balanced Assessments English Language Arts/Literacy 6th Grade	Smarter Balanced Assessments English Language Arts/Literacy 7th Grade	Smarter Balanced Assessments English Language Arts/Literacy 8th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 3rd Grade	Smarter Balanced Assessments Mathematics 4th Grade	Smarter Balanced Assessments Mathematics 5th Grade	Smarter Balanced Assessments Mathematics 6th Grade	Smarter Balanced Assessments Mathematics 7th Grade	Smarter Balanced Assessments Mathematics 8th Grade	Smarter Balanced Assessments Mathematics All Grades	% Completely Immunized KG	% Polio KG	% Hepatitis B KG	% Varicella KG	% DTP KG	% MMR KG	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Cinnabar Charter	Public, Charter	K-8	286 Skillman Ln.	Petaluma	94952	Sonoma County	Cinnabar Elementary	Yes	(n/a)	No	(n/a)	(707) 765-4345	156	9	16.4	83.3%	23 (14.7%)	1 (0.6%)	125 (80.1%)	0 (0.0%)	1 (0.6%)	1 (0.6%)	5 (3.2%)	21.3	4719^th of 5857 public elementary schools	19.4%		18.4	4994^th of 5869 public elementary schools	14.9%	275	19.1		16.7	38.9	32.0	30.0	21.4	26.7		30.4	16.7	12.0	23.8	14.3	13.3		16.5							$16,931	$1,158	$15,773
Cinnabar Elementary	Public	K	286 Skillman Ln.	Petaluma	94952	Sonoma County	Cinnabar Elementary	No	(n/a)	No	(n/a)	(707) 765-4345	20	1	20.0	65.0%	4 (20.0%)	0 (0.0%)	15 (75.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1 (5.0%)								(n/a)																								$15,620	$1,158	$14,462
Mary Collins Charter School at Cherry Valley	Public, Charter	K-8	1001 Cherry St.	Petaluma	94952	Sonoma County	Petaluma Joint Union High	Yes	(n/a)	No	(n/a)	(707) 778-4740	494	19	26.2	26.5%	359 (72.7%)	1 (0.2%)	59 (11.9%)	6 (1.2%)	4 (0.8%)	0 (0.0%)	61 (12.3%)	72	1516^th of 5857 public elementary schools	74.1%		73.5	1433^rd of 5869 public elementary schools	75.6%	83	58.5	46.9	53.5	53.7	50.9	64.6	60.3	70.7	63.3	60.3	47.2	58.5	53.1	34.9	56.1	50.0	49.4	76.9	82.7	84.6	84.6	88.5	84.6	$16,065	$706	$15,359
Meadow Elementary	Public	K-6	880 Maria Dr.	Petaluma	94954	Sonoma County	Waugh Elementary	No	(n/a)	No	(n/a)	(707) 762-4905	384	17	22.1	13.3%	226 (58.9%)	3 (0.8%)	77 (20.1%)	21 (5.5%)	0 (0.0%)	2 (0.5%)	55 (14.3%)	93.2	461^st of 5857 public elementary schools	92.1%		92.8	515^th of 5869 public elementary schools	91.2%	54	55.9		55.9	85.7	76.5	79.4	83.3			81.1	81.6	78.4	57.4	66.7			69.8	95.0	95.0		96.7	95.0	96.7
Corona Creek Elementary	Public	K-6	1851 Hartman Ln.	Petaluma	94954	Sonoma County	Waugh Elementary	No	(n/a)	No	(n/a)	(707) 765-3331	403	18	21.9	14.4%	254 (63.0%)	6 (1.5%)	95 (23.6%)	22 (5.5%)	2 (0.5%)	0 (0.0%)	23 (5.7%)	79.2	1188^th of 5857 public elementary schools	79.7%		84.9	955^th of 5869 public elementary schools	83.7%	233	44.4		44.4	60.6	55.0	68.5	64.9			62.0	54.6	75.0	44.4	66.7			60.3	94.3		95.7
Wilson Elementary	Public	K-6	3775 Bodega Ave.	Petaluma	94952	Sonoma County	Wilmar Union Elementary	No	(n/a)	No	(n/a)	(707) 765-4340	235	10	23.4	20.0%	184 (78.3%)	4 (1.7%)	40 (17.0%)	3 (1.3%)	3 (1.3%)	0 (0.0%)	1 (0.4%)	67.1	1740^th of 5857 public elementary schools	70.3%		87.2	851^st of 5869 public elementary schools	85.5%	889	37.9		37.9	50.0	58.6	48.3	58.6			53.5	55.0	62.1	51.7	34.5			51.2							$14,969	$1,721	$13,248
Valley Vista Elementary	Public	K-6	730 North Webster St.	Petaluma	94952	Sonoma County	Petaluma City Elementary	No	(n/a)	No	(n/a)	(707) 778-4762	155	8	19.3	66.5%	54 (34.8%)	0 (0.0%)	81 (52.3%)	3 (1.9%)	3 (1.9%)	4 (2.6%)	10 (6.5%)	18	5010^th of 5857 public elementary schools	14.5%		30.8	3872^nd of 5869 public elementary schools	34.0%	1138	0.0		0.0	0.0	21.1	16.7	34.8			20.3	12.5	25.0	8.3	30.4			21.1	92.6	96.3	96.3	94.4	94.4	96.3	$18,785	$1,416	$17,369
McKinley Elementary	Public	K-6	110 Ellis St.	Petaluma	94952	Sonoma County	Petaluma City Elementary	No	(n/a)	No	(n/a)	(707) 778-4750	368	15	24.5	50.8%	125 (34.0%)	6 (1.6%)	172 (46.7%)	26 (7.1%)	6 (1.6%)	2 (0.5%)	29 (7.9%)	43.7	2967^th of 5857 public elementary schools	49.3%		55.8	2245^th of 5869 public elementary schools	61.7%	722	20.0		20.0	41.5	33.3	37.3	48.4			40.7	41.5	38.3	31.7	43.8			38.8	84.4	89.1		90.6	87.5	87.5	$14,783	$799	$13,984
Sonoma Mountain Elementary	Public, Charter	K-6	1900 Rainier Cir.	Petaluma	94954	Sonoma County	Old Adobe Union	Yes	(n/a)	No	(n/a)	(707) 765-4305	422	17	24.8	15.4%	294 (69.7%)	1 (0.2%)	60 (14.2%)	22 (5.2%)	3 (0.7%)	0 (0.0%)	42 (10.0%)	93.3	451^st of 5857 public elementary schools	92.3%		85.9	912^th of 5869 public elementary schools	84.5%	461	60.7		60.7	87.5	79.6	80.0	66.7			78.5	85.7	79.6	64.3	59.3			72.3							$17,373	$1,153	$16,220
Loma Vista Immersion Academy	Public, Charter	K-6	207 Maria Dr.	Petaluma	94954	Sonoma County	Old Adobe Union	Yes	(n/a)	No	(n/a)	(707) 765-4302	451	18	24.5	45.9%	101 (22.4%)	4 (0.9%)	329 (72.9%)	3 (0.7%)	1 (0.2%)	1 (0.2%)	12 (2.7%)	43.1	3000^th of 5857 public elementary schools	48.8%		37.8	3317^th of 5869 public elementary schools	43.5%	317	33.3		33.3	32.8	35.2	47.1	31.7			36.6	40.9	46.3	41.2	26.8			39.6							$19,941	$1,532	$18,409

Frequently Asked Questions about Cinnabar Charter

What district is Cinnabar Charter in?

Cinnabar Elementary

How many students attend Cinnabar Charter?

In the 2024-25 school year, 156 students attended Cinnabar Charter.

What is the racial makeup of Cinnabar Charter?

Students at Cinnabar Charter are 80% Hispanic, 15% White, 3% Two or more races.

What schools do graduates of Cinnabar Charter attend?

Students who attend Cinnabar Charter usually go on to attend:

Middle : Petaluma Junior High
High : Petaluma High

Is Cinnabar Charter a good school?

Cinnabar Charter ranks in the bottom 19.4% of California elementary schools.

Rate Cinnabar Charter!

Other helpful SchoolDigger resources...

Compare to nearby schools

CACalifornia Elementary School Rankings

CACalifornia District Rankings

Schools in Petaluma, CA

Sign up for updates!

Be the first to know when there is an update for Cinnabar Charter!

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.