allk12 · Rankings · Highest ratio · California · Contra Costa County · Middle schools

The public middle schools with the highest student-to-teacher ratios in Contra Costa County, California

Across Contra Costa County, California, 43 public middle schools are ranked here, ranked by the most students per teacher, a proxy for larger classes. Richmond Charter Academy leads the list at 36.7:1, against a median of 22.2:1 across the ranked schools.

Sort any column, filter to a school or district, or download the full ranking as a CSV. Source data is federal NCES and state assessment reporting, 2024-25.

Schools ranked

Contra Costa County, California

Top Students/teacher

36.7:1

Median Students/teacher

22.2:1

HIGHEST RATIO · CONTRA COSTA COUNTY, CALIFORNIA

#	School	City	District	Level	Students	Ratio
1	Richmond Charter Academy	Richmond, CA	Richmond Charter Academy District	Middle	296	36.7:1
2	Foothill Middle	Walnut Creek, CA	Mt. Diablo Unified	Middle	1,005	25.7:1
3	Sequoia Middle	Pleasant Hill, CA	Mt. Diablo Unified	Middle	882	25.7:1
4	Pinole Middle	Pinole, CA	West Contra Costa Unified	Middle	381	25.2:1
5	Pine Valley Middle	San Ramon, CA	San Ramon Valley Unified	Middle	973	24.9:1
6	Hercules Middle	Hercules, CA	West Contra Costa Unified	Middle	596	24.7:1
7	Valley View Middle	Pleasant Hill, CA	Mt. Diablo Unified	Middle	819	24.3:1
8	Adams (J. Douglas) Middle	Brentwood, CA	Brentwood Union	Middle	1,197	24.1:1
9	William B. Bristow Middle	Brentwood, CA	Brentwood Union	Middle	1,223	24.1:1
10	Windemere Ranch Middle	San Ramon, CA	San Ramon Valley Unified	Middle	1,011	24.0:1
11	Dallas Ranch Middle	Antioch, CA	Antioch Unified	Middle	795	23.9:1
12	Fred T. Korematsu Middle	El Cerrito, CA	West Contra Costa Unified	Middle	708	23.7:1
13	El Dorado Middle	Concord, CA	Mt. Diablo Unified	Middle	861	23.5:1
14	Diablo Vista Middle	Danville, CA	San Ramon Valley Unified	Middle	835	23.3:1
15	Pleasant Hill Middle	Pleasant Hill, CA	Mt. Diablo Unified	Middle	738	23.3:1
16	Martinez Junior High	Martinez, CA	Martinez Unified	Middle	843	23.3:1
17	Diablo View Middle	Clayton, CA	Mt. Diablo Unified	Middle	514	23.1:1
18	Charlotte Wood Middle	Danville, CA	San Ramon Valley Unified	Middle	853	22.9:1
19	O'Hara Park Middle	Oakley, CA	Oakley Union Elementary	Middle	856	22.7:1
20	Gale Ranch Middle	San Ramon, CA	San Ramon Valley Unified	Middle	971	22.7:1
21	Iron Horse Middle	San Ramon, CA	San Ramon Valley Unified	Middle	939	22.5:1
22	Park Middle	Antioch, CA	Antioch Unified	Middle	1,055	22.2:1
23	Walnut Creek Intermediate	Walnut Creek, CA	Walnut Creek Elementary	Middle	940	22.2:1
24	Helms Middle	San Pablo, CA	West Contra Costa Unified	Middle	558	22.1:1
25	Edna Hill Middle	Brentwood, CA	Brentwood Union	Middle	1,047	21.8:1
26	Rancho Medanos Junior High	Pittsburg, CA	Pittsburg Unified	Middle	812	21.8:1
27	Joaquin Moraga Intermediate	Moraga, CA	Moraga Elementary	Middle	658	21.7:1
28	Stone Valley Middle	Alamo, CA	San Ramon Valley Unified	Middle	586	21.7:1
29	Delta Vista Middle	Oakley, CA	Oakley Union Elementary	Middle	873	21.6:1
30	Antioch Middle	Antioch, CA	Antioch Unified	Middle	665	21.5:1
31	Hillview Junior High	Pittsburg, CA	Pittsburg Unified	Middle	893	21.5:1
32	Pine Hollow Middle	Concord, CA	Mt. Diablo Unified	Middle	538	21.3:1
33	Black Diamond Middle	Antioch, CA	Antioch Unified	Middle	358	21.3:1
34	Riverview Middle	Bay Point, CA	Mt. Diablo Unified	Middle	682	21.2:1
35	Martin Luther King Jr. Junior High	Pittsburg, CA	Pittsburg Unified	Middle	706	21.0:1
36	Oak Grove Middle	Concord, CA	Mt. Diablo Unified	Middle	681	20.6:1
37	Carquinez Middle	Crockett, CA	John Swett Unified	Middle	286	20.6:1
38	Lovonya DeJean Middle	Richmond, CA	West Contra Costa Unified	Middle	381	20.4:1
39	Los Cerros Middle	Danville, CA	San Ramon Valley Unified	Middle	486	19.9:1
40	Excelsior Middle	Byron, CA	Byron Union Elementary	Middle	377	19.1:1
41	Orinda Intermediate	Orinda, CA	Orinda Union	Middle	822	19.1:1
42	M. H. Stanley Middle	Lafayette, CA	Lafayette Elementary	Middle	1,117	18.9:1
43	Betty Reid Soskin Middle	El Sobrante, CA	West Contra Costa Unified	Middle	372	18.5:1

Page 1 of 1 · top 43 of 43 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

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DATA NOTICE

allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.