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Sonoma Mountain High (Necessary Small School)

Public Grades 9-12

Students ?

10.6

Student/teacher ratio ?

$54,343

Per pupil spending ?

71.4%

Free/discounted lunch ?

299 Casa Grande Rd.
Petaluma, CA 94954-5604

(707) 778-4738

District: Petaluma Joint Union High

Racial breakdown:

White:

76.2%

Hispanic:

19.0%

Two or more races:

4.8%

See top rated California public schools

Compare Sonoma Mountain High (Necessary Small School) to nearby high schools!

At a glance

▼ Ranking trend: Declining — 52nd percentile in 2007 → 45th in 2022

Strengths

✓Small classes — about 11 students per teacher

Worth a look

!Test scores below the California average (24% vs 38% meeting standards)

!Graduation rate below the California average (82% vs 88%)

!High chronic absenteeism (71% vs 19% California)

Students meeting standards (2021-2022) ?

This school24%

District avg46%

California avg38%

Not ranked this year

Sonoma Mountain High (Necessary Small School) did not have enough recent test-score data to be ranked. Check the trend below for past years.

428^th of 1,543Petaluma Joint Union High 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)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2022	40.6	1161 of 2123	45.3%	★★☆☆☆
2016	28.4	1388 of 2039	31.9%	★★☆☆☆
2015	14.2	1623 of 1994	18.6%	★☆☆☆☆
2013	33.6	1222 of 2426	49.6%	★★☆☆☆
2012	15.5	1790 of 2354	24.0%	★☆☆☆☆
2011	13.4	1929 of 2367	18.5%	★☆☆☆☆
2010	21.3	1566 of 2281	31.3%	★★☆☆☆
2009	26.2	1566 of 2238	30.0%	★★☆☆☆
2008	27.1	1253 of 2117	40.8%	★★☆☆☆
2007	35.7	998 of 2063	51.6%	★★★☆☆
2006	26.9	1186 of 1968	39.7%	★★☆☆☆
2005	8.9	1726 of 1901	9.2%	☆☆☆☆☆
2004	14.5	1491 of 1653	9.8%	☆☆☆☆☆

By subject vs California (2021-2022) ?

English Language Arts/Literacy54%+7 vs state

Science13%-16 vs state

Mathematics8%-26 vs state

★

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Schools Near Sonoma Mountain High (Necessary Small School)

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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 12th 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
Sonoma Mountain High (Necessary Small School)	Public	9-12	299 Casa Grande Rd.	Petaluma	94954	Sonoma County	Petaluma Joint Union High	No	(n/a)	No	(n/a)	(707) 778-4738	21	2	10.6	71.4%	16 (76.2%)	0 (0.0%)	4 (19.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1 (4.8%)								(n/a)								$54,343	$53,638	$705
Casa Grande High	Public	9-12	333 Casa Grande Rd.	Petaluma	94954	Sonoma County	Petaluma Joint Union High	No	(n/a)	No	(n/a)	(707) 778-4677	1,653	77	21.5	48.6%	687 (41.6%)	27 (1.6%)	770 (46.6%)	60 (3.6%)	5 (0.3%)	5 (0.3%)	91 (5.5%)	77.6	453^rd of 2162 public high schools	79.0%		69.2	575^th of 2159 public high schools	73.4%	122	45.9	26.1	44.8	66.7	66.7	35.5	35.5	$23,410	$22,624	$786
Valley Oaks High (Alternative)	Public	7-12	540 Vallejo St.	Petaluma	94952	Sonoma County	Petaluma Joint Union High	No	(n/a)	No	(n/a)	(707) 778-4794	43	5	8.0	44.2%	28 (65.1%)	1 (2.3%)	8 (18.6%)	0 (0.0%)	1 (2.3%)	0 (0.0%)	3 (7.0%)								(n/a)					36.4		9.1	$45,777	$45,276	$501
San Antonio High (Continuation)	Public	9-12	500 Vallejo St.	Petaluma	94952	Sonoma County	Petaluma Joint Union High	No	(n/a)	No	(n/a)	(707) 778-4758	65	8	8.5	84.6%	17 (26.2%)	2 (3.1%)	41 (63.1%)	1 (1.5%)	1 (1.5%)	0 (0.0%)	2 (3.1%)	12	1914^th of 2162 public high schools	11.5%		11	2007^th of 2159 public high schools	7.0%	93	6.3		6.3	19.2	19.2	0.0	0.0	$53,258	$48,420	$4,838
Carpe Diem High (Continuation)	Public	9-12	199 Fair St.	Petaluma	94952	Sonoma County	Petaluma Joint Union High	No	(n/a)	No	(n/a)	(707) 778-4796	19	2	9.5	42.1%	14 (73.7%)	0 (0.0%)	2 (10.5%)	0 (0.0%)	0 (0.0%)	1 (5.3%)	0 (0.0%)								(n/a)								$48,892	$48,206	$686
Petaluma High	Public	9-12	201 Fair St.	Petaluma	94952	Sonoma County	Petaluma Joint Union High	No	(n/a)	No	(n/a)	(707) 778-4651	1,193	57	20.9	40.9%	712 (59.7%)	15 (1.3%)	371 (31.1%)	22 (1.8%)	4 (0.3%)	4 (0.3%)	55 (4.6%)	67.5	647^th of 2162 public high schools	70.1%		67.3	608^th of 2159 public high schools	71.8%	39	37.9	15.4	36.9	53.2	53.2	36.9	36.9	$27,124	$26,558	$566
Credo High	Public, Charter	9-12	1300 Valley House Dr. Ste. 100	Rohnert Park	94928	Sonoma County	Credo High District	Yes	(n/a)	No	(n/a)	(707) 664-0600	441	32	13.6	28.3%	270 (61.2%)	4 (0.9%)	88 (20.0%)	5 (1.1%)	1 (0.2%)	0 (0.0%)	59 (13.4%)	92	166^th of 2162 public high schools	92.3%		93.9	136^th of 2159 public high schools	93.7%	30		60.0	60.0	77.2	77.2	49.6	49.6
Sonoma Valley High	Public	9-12	20000 Broadway	Sonoma	95476	Sonoma County	Sonoma Valley Unified	No	(n/a)	No	(n/a)	(707) 933-4010	1,071	57	18.8	32.8%	315 (29.4%)	2 (0.2%)	718 (67.0%)	19 (1.8%)	2 (0.2%)	3 (0.3%)	12 (1.1%)	41.7	1220^th of 2162 public high schools	43.6%		58.4	806^th of 2159 public high schools	62.7%	414	18.4		18.2	52.6	52.6	16.7	16.7	$19,904	$19,462	$442
Creekside High	Public	9-12	20000 Broadway	Sonoma	95476	Sonoma County	Sonoma Valley Unified	No	(n/a)	No	(n/a)	(707) 933-4046	48	3	15.6	50.0%	11 (22.9%)	3 (6.3%)	33 (68.8%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1 (2.1%)	7.4	2136^th of 2162 public high schools	1.2%		11	2000^th of 2159 public high schools	7.4%	136	0.0		0.0	4.2	4.2	0.0	0.0	$35,910	$35,780	$130
El Camino High	Public	9-12	5450 Snyder Ln.	Rohnert Park	94928	Sonoma County	Cotati-Rohnert Park Unified	No	(n/a)	No	(n/a)	(707) 792-4750	48	2	21.8	66.7%	10 (20.8%)	2 (4.2%)	29 (60.4%)	1 (2.1%)	0 (0.0%)	0 (0.0%)	6 (12.5%)	25.2	1592^nd of 2162 public high schools	26.4%					(n/a)		15.8	15.8	0.0	0.0			$19,658	$18,796	$862

Frequently Asked Questions about Sonoma Mountain High (Necessary Small School)

How many students attend Sonoma Mountain High (Necessary Small School)?

In the 2024-25 school year, 21 students attended Sonoma Mountain High (Necessary Small School).

What district is Sonoma Mountain High (Necessary Small School) in?

Petaluma Joint Union High

What is the racial makeup of Sonoma Mountain High (Necessary Small School)?

Students at Sonoma Mountain High (Necessary Small School) are 76% White, 19% Hispanic, 5% Two or more races.

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Latest California data All new data »

2024–25 school spending dataJul 1, 2026

2024–25 attendance dataMar 13, 2026

2024–25 CSA Spanish test scoresDec 22, 2025

2024–25 dropout rates & graduation ratesNov 14, 2025

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.