allk12 · Rankings · Fastest declining · California · Contra Costa County · Middle schools

The fastest-declining public middle schools by enrollment in Contra Costa County, California

35 public middle schools in Contra Costa County, California appear in this ranking of the fastest-declining public middle schools by enrollment, ranked by the steepest enrollment decline between the 2017-18 and 2024-25 school years. Helms Middle leads the list at -44.0%, against a median of -11.9% across the ranked schools.

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Schools ranked

Contra Costa County, California

Best Enrollment change

-44.0%

Median Enrollment change

-11.9%

FASTEST DECLINING · CONTRA COSTA COUNTY, CALIFORNIA

#	School	City	District	2017-18	2024-25	% Change
1	Helms Middle	San Pablo, CA	West Contra Costa Unified	997	558	-44.0%
2	Excelsior Middle	Byron, CA	Byron Union Elementary	580	377	-35.0%
3	Diablo View Middle	Clayton, CA	Mt. Diablo Unified	706	514	-27.2%
4	Los Cerros Middle	Danville, CA	San Ramon Valley Unified	646	486	-24.8%
5	Pinole Middle	Pinole, CA	West Contra Costa Unified	505	381	-24.6%
6	Windemere Ranch Middle	San Ramon, CA	San Ramon Valley Unified	1,325	1,011	-23.7%
7	Gale Ranch Middle	San Ramon, CA	San Ramon Valley Unified	1,257	971	-22.8%
8	Betty Reid Soskin Middle	El Sobrante, CA	West Contra Costa Unified	475	372	-21.7%
9	Riverview Middle	Bay Point, CA	Mt. Diablo Unified	852	682	-20.0%
10	Diablo Vista Middle	Danville, CA	San Ramon Valley Unified	1,023	835	-18.4%
11	Dallas Ranch Middle	Antioch, CA	Antioch Unified	970	795	-18.0%
12	Martinez Junior High	Martinez, CA	Martinez Unified	1,017	843	-17.1%
13	Rancho Medanos Junior High	Pittsburg, CA	Pittsburg Unified	963	812	-15.7%
14	Pleasant Hill Middle	Pleasant Hill, CA	Mt. Diablo Unified	865	738	-14.7%
15	Iron Horse Middle	San Ramon, CA	San Ramon Valley Unified	1,099	939	-14.6%
16	Charlotte Wood Middle	Danville, CA	San Ramon Valley Unified	994	853	-14.2%
17	Lovonya DeJean Middle	Richmond, CA	West Contra Costa Unified	439	381	-13.2%
18	Oak Grove Middle	Concord, CA	Mt. Diablo Unified	773	681	-11.9%
19	Walnut Creek Intermediate	Walnut Creek, CA	Walnut Creek Elementary	1,063	940	-11.6%
20	Antioch Middle	Antioch, CA	Antioch Unified	746	665	-10.9%
21	Pine Hollow Middle	Concord, CA	Mt. Diablo Unified	593	538	-9.3%
22	M. H. Stanley Middle	Lafayette, CA	Lafayette Elementary	1,227	1,117	-9.0%
23	Hillview Junior High	Pittsburg, CA	Pittsburg Unified	962	893	-7.2%
24	Sequoia Middle	Pleasant Hill, CA	Mt. Diablo Unified	949	882	-7.1%
25	Pine Valley Middle	San Ramon, CA	San Ramon Valley Unified	1,046	973	-7.0%
26	Carquinez Middle	Crockett, CA	John Swett Unified	307	286	-6.8%
27	Orinda Intermediate	Orinda, CA	Orinda Union	870	822	-5.5%
28	Stone Valley Middle	Alamo, CA	San Ramon Valley Unified	615	586	-4.7%
29	Park Middle	Antioch, CA	Antioch Unified	1,102	1,055	-4.3%
30	Black Diamond Middle	Antioch, CA	Antioch Unified	374	358	-4.3%
31	Martin Luther King Jr. Junior High	Pittsburg, CA	Pittsburg Unified	732	706	-3.6%
32	Valley View Middle	Pleasant Hill, CA	Mt. Diablo Unified	849	819	-3.5%
33	El Dorado Middle	Concord, CA	Mt. Diablo Unified	883	861	-2.5%
34	O'Hara Park Middle	Oakley, CA	Oakley Union Elementary	872	856	-1.8%
35	Fred T. Korematsu Middle	El Cerrito, CA	West Contra Costa Unified	715	708	-1.0%

Page 1 of 1 · top 35 of 35 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.