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Sonora Union High

At a glance

1054^thof 1,543 California districts▲ 107

Better than 31% of California districts

High 3Grades 9-12

100 School St.
Sonora, CA 95370-5680·(209) 533-8510·All California district rankings →

Statewide performance 2017–2025

2025: better than 31.7% of districts

Schools

989

Students

Top rankedSonora High638^th of 2,162 California high schools

▲

Biggest riser

Dario Cassina High up 264 spots statewide this year

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

Summary:

The Sonora Union High district in California consists of three high schools serving grades 9-12, educating about 989 students in a mix of traditional and alternative settings.

The clear academic leader in the district is Sonora High, the large comprehensive high school serving 89% of district students. It earns a 4-star rating, boasts a 96.4% graduation rate, and outperforms the state average in English proficiency. In contrast, the smaller Theodore Bird High and Dario Cassina High serve as alternative programs with much lower academic rankings but show recent improvement from very low baselines.

Key district challenges include math proficiency, which lags behind the state average, and alarmingly high chronic absenteeism rates, especially at the smaller schools. Despite these academic struggles, the district maintains a strong overall graduation rate of 92.6%. Parents should note the significant differences in environment and performance between the large main high school and the two smaller alternative schools, which appear to serve students with greater needs.

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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 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)		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/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 11th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 11th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 11th Grade	Smarter Balanced Assessments Mathematics All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Sonora High	Public	9-12	430 North Washington St.	Sonora	95370	Tuolumne County	Sonora Union High	No	(n/a)	No	(n/a)	(209) 532-5511	880	38	22.9	38.3%	542 (61.6%)	9 (1.0%)	206 (23.4%)	18 (2.0%)	15 (1.7%)	1 (0.1%)	85 (9.7%)	67.9	638^th of 2162 public high schools	70.5%		70.4	560^th of 2159 public high schools	74.1%	78	35.6	35.0	65.7	65.7	29.1	29.1	$22,188	$21,924	$264
Dario Cassina High	Public	10-12	251 South Barretta St.	Sonora	95370	Tuolumne County	Sonora Union High	No	(n/a)	No	(n/a)	(209) 532-1587	44	3	14.1	75.0%	30 (68.2%)	0 (0.0%)	9 (20.5%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	4 (9.1%)	15.6	1784^th of 2162 public high schools	17.5%		10.4	2048^th of 2159 public high schools	5.1%	264	8.0	7.7	28.0	28.0	0.0	0.0	$38,748	$32,590	$6,158
Theodore Bird High	Public	9-12	251 South Barretta St.	Sonora	95370	Tuolumne County	Sonora Union High	No	(n/a)	No	(n/a)	(209) 533-2923	65	3	21.6	56.9%	49 (75.4%)	0 (0.0%)	8 (12.3%)	0 (0.0%)	1 (1.5%)	1 (1.5%)	3 (4.6%)	16.3	1762^nd of 2162 public high schools	18.5%		13.3	1875^th of 2159 public high schools	13.2%	113	7.1	7.0	22.5	22.5	7.3	7.3	$12,831	$11,734	$1,097

Districts nearby

District	Distance	# of Schools	Statewide Rank
Tuolumne County Superintendent of Schools	0.85 mi	5
Sonora Elementary	1.12 mi	1	688^th
Jamestown Elementary	3.01 mi	2	1121^st
Columbia Union	3.04 mi	1	747^th
Curtis Creek Elementary	4.65 mi	1	1012^th

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.