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Windsor Unified

New rankings! SchoolDigger recently updated its California rankings with newly released test scores for the 2025-26 school year.

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At a glance

637^thof 968 California districts▲ 359

Better than 34% of California districts

Elementary 3 Middle 1 High 4Grades K-12

9291 Old Redwood Hwy. Bldg. 50
Windsor, CA 95492-9217·(707) 837-7701·All California district rankings →

Statewide performance 2017–2026

2026: better than 34.3% of districts

Schools

4,669

Students

Top rankedWindsor High948^th of 2,137 California high schools

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Biggest riser

Cali Calmecac Language Academy up 57 spots statewide this year

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Smallest classes

Windsor Middle 15.9 students per teacher

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Newly ranked this year

Sonoma County Virtual Academy

SchoolDigger ratings

3★

2★

1★

0★

2 schools without a SchoolDigger rating (too few tested students)

Compare California districts →See the top-ranked California schools →

Summary:

Windsor Unified includes eight schools across elementary, middle and high school grade levels: three elementary schools, one middle school and four high schools. In 2025–26, the six schools with reported ELA and math results averaged 32% in ELA and 21% in math, compared with state averages of 49% and 38%; the five schools with reported science results averaged 31%, versus 36% statewide. The clearest area-wide finding is that science results are closer to the state average, while ELA and math are substantially lower.

Windsor High leads in all-grades ELA at 59%, 9 points above the state, while Windsor Oaks Academy is lowest among reported schools at 0%, 49 points below. Windsor Middle leads in math at 29%—though still 9 points below the state—and science at 36%, effectively matching the state. Windsor Oaks also has the lowest reported math result, 7%, compared with 38% statewide; all schools with reported math results are below the state. Results can differ by grade: Cali Calmecac Language Academy scores 46% in 8th-grade science, compared with 36% at Windsor Middle and 35% statewide.

Recent trends are mixed: the comparable school average fell 8 points in ELA and 6 points in math from 2024–25 to 2025–26, while science rose 5 points. SchoolDigger’s percentile rank also moved differently across schools: Windsor Middle went from 59 in 2023–24 to 48 in 2025–26, while Brooks Elementary moved from 37 to 22. The income measure is free/reduced lunch eligible for 2024–25; reported shares range from 38% at Big Picture Learning Windsor to 70% at Windsor Oaks. Big Picture reports a 100% graduation rate and no chronic absenteeism, but its 2025–26 test scores are suppressed; Sonoma County Virtual Academy has a 48.0 student-teacher ratio and 32% chronic absenteeism. Mattie Washburn Elementary has no test scores listed, and all-grades results cover different grade spans.

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Ranking:

E Elementary M Middle H High A Alternative P Private

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

School													Students/Teachers											Ranking (2026)				Ranking (2025)				CSA Spanish Overall (2026)							CSA Spanish Listening (2026)							CSA Spanish Writing (2026)							CSA Spanish Reading (2026)							CAST Science (2026)						Smarter Balanced Assessments English Language Arts/Literacy (2026)								Smarter Balanced Assessments Mathematics (2026)								Vaccination (2024-25)		Per Pupil Expenditures (2025)
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/reduced lunch (2024-25)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	CSA Spanish Overall 3rd Grade	CSA Spanish Overall 4th Grade	CSA Spanish Overall 5th Grade	CSA Spanish Overall 6th Grade	CSA Spanish Overall 7th Grade	CSA Spanish Overall 8th Grade	CSA Spanish Overall All Grades	CSA Spanish Listening 3rd Grade	CSA Spanish Listening 4th Grade	CSA Spanish Listening 5th Grade	CSA Spanish Listening 6th Grade	CSA Spanish Listening 7th Grade	CSA Spanish Listening 8th Grade	CSA Spanish Listening All Grades	CSA Spanish Writing 3rd Grade	CSA Spanish Writing 4th Grade	CSA Spanish Writing 5th Grade	CSA Spanish Writing 6th Grade	CSA Spanish Writing 7th Grade	CSA Spanish Writing 8th Grade	CSA Spanish Writing All Grades	CSA Spanish Reading 3rd Grade	CSA Spanish Reading 4th Grade	CSA Spanish Reading 5th Grade	CSA Spanish Reading 6th Grade	CSA Spanish Reading 7th Grade	CSA Spanish Reading 8th Grade	CSA Spanish Reading All Grades	CAST Science 5th Grade	CAST Science 8th Grade	CAST Science 10th Grade	CAST Science 11th Grade	CAST Science 12th 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 11th 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 11th Grade	Smarter Balanced Assessments Mathematics All Grades	Vaccination: Kindergartners with all required immunizations	Vaccination: Exemption rate	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Mattie Washburn Elementary	Public	K-2	75 Pleasant Ave.	Santa Rosa	95403	Sonoma County	Windsor Unified	No	(n/a)	No	(n/a)	(707) 837-7727	535	32	16.6	52.5%	201 (37.6%)	2 (0.4%)	268 (50.1%)	11 (2.1%)	6 (1.1%)	5 (0.9%)	42 (7.9%)								(n/a)																																																			96%	0%	$38,856	$37,732	$1,124
Windsor High	Public	9-12	8695 Windsor Rd.	Windsor	95492	Sonoma County	Windsor Unified	No	(n/a)	No	(n/a)	(707) 837-7767	1,700	85	19.9	48.4%	617 (36.3%)	9 (0.5%)	927 (54.5%)	39 (2.3%)	12 (0.7%)	6 (0.4%)	80 (4.7%)	54.1	948^th of 2137 public high schools	55.6%		60.2	814^th of 2162 public high schools	62.3%	134																																30.8	46.7	31.4							58.5	58.5							23.5	23.5			$38,856	$37,732	$1,124
Windsor Middle	Public	6-8	9500 Brooks Rd. South	Windsor	95492	Sonoma County	Windsor Unified	No	(n/a)	No	(n/a)	(707) 837-7737	736	46	15.9	46.7%	291 (39.5%)	6 (0.8%)	363 (49.3%)	10 (1.4%)	7 (1.0%)	4 (0.5%)	54 (7.3%)	42.1	1406^th of 2703 public middle schools	48.0%		45.7	1306^th of 2761 public middle schools	52.7%	100																														35.7				35.7				33.5	47.2	42.0		41.6				18.5	35.6	29.9		28.9			$38,856	$37,732	$1,124
Cali Calmecac Language Academy	Public, Charter	K-8	9491 Starr Rd.	Windsor	95492	Sonoma County	Windsor Unified	Yes	(n/a)	No	(n/a)	(707) 837-7747	1,075	53	20.4	59.1%	200 (18.6%)	2 (0.2%)	829 (77.1%)	8 (0.7%)	0 (0.0%)	1 (0.1%)	35 (3.3%)	26.5	4257^th of 5804 public elementary schools	26.7%		26	4314^th of 5857 public elementary schools	26.3%	57	21.6	11.9	5.2	5.3	9.8	7.5	10.4	51.7	13.8	39.6	7.9	16.1	20.6	24.8	31.0	20.2	9.4	2.6	20.5	9.4	15.8	15.5	12.8	1.0	3.5	6.3	17.8	9.6	19.0	45.8				33.2	44.4	24.8	39.0	24.4	34.8	47.2		35.6	34.5	17.4	24.2	23.5	24.1	38.7		27.1	96%	0%	$38,856	$37,732	$1,124
Windsor Oaks Academy	Public	9-12	8681 Windsor Rd.	Windsor	95492	Sonoma County	Windsor Unified	No	(n/a)	No	(n/a)	(707) 837-7771	33	3	9.8	69.7%	6 (18.2%)	0 (0.0%)	27 (81.8%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	9.9	1958^th of 2137 public high schools	8.4%		21.3	1669^th of 2162 public high schools	22.8%	289																																									0.0	0.0							6.7	6.7			$38,856	$37,732	$1,124
Brooks Elementary	Public	3-5	750 Natalie Dr.	Windsor	95492	Sonoma County	Windsor Unified	No	(n/a)	No	(n/a)	(707) 837-7717	493	23	21.8	50.3%	200 (40.6%)	3 (0.6%)	246 (49.9%)	7 (1.4%)	5 (1.0%)	2 (0.4%)	29 (5.9%)	23.6	4500^th of 5804 public elementary schools	22.5%		25.1	4383^rd of 5857 public elementary schools	25.2%	117																													27.0					27.0	21.3	30.8	34.1					28.8	23.8	26.4	22.1					24.0			$38,856	$37,732	$1,124
Big Picture Learning Windsor	Public	6-12	8681 Windsor Rd.	Windsor	95492	Sonoma County	Windsor Unified	No	(n/a)	No	(n/a)	(707) 837-7771	34	4	9.1	38.2%	19 (55.9%)	0 (0.0%)	13 (38.2%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)								(n/a)																																																					$38,856	$37,732	$1,124
Sonoma County Virtual Academy	Public, Virtual	6-12	8681 Windsor Rd.	Windsor	95492	Sonoma County	Windsor Unified	No	(n/a)	Yes	(n/a)	(707) 657-5585	63	1	48.0	57.1%	18 (28.6%)	0 (0.0%)	40 (63.5%)	1 (1.6%)	2 (3.2%)	0 (0.0%)	1 (1.6%)	33.9	1404^th of 2137 public high schools	34.3%					(n/a)																																		28.6							36.4	25.0							18.2	15.0			$38,856	$37,732	$1,124

Districts nearby

District	Distance	# of Schools	Statewide Rank
Sonoma County Regional Occupational Program	2.05 mi	1
Sonoma County Office of Education	2.05 mi	3
Mark West Union Elementary	2.54 mi	4	294^th
Piner-Olivet Union Elementary	4.45 mi	5	745^th
Piner-Olivet Charter District	4.48 mi	1

See the top CA California districts

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.