allk12 · Rankings · Biggest declines · California · San Bernardino County · High schools

The public high schools with the biggest test-score declines in San Bernardino County, California

56 public high schools in San Bernardino County, California appear in this ranking of the public high schools with the biggest test-score declines, ranked by the 3-year drop in composite math + reading proficiency. Trona High leads the list at -14.5pp, against a median of +5.3pp across the ranked schools.

Use the search box to find a specific school within this ranking, sort by any column, or export the full list. Built from NCES and state data for 2024-25.

Schools ranked

San Bernardino County, California

Best 3-yr change

-14.5pp

Median 3-yr change

+5.3pp

BIGGEST DECLINES · SAN BERNARDINO COUNTY, CALIFORNIA

#	School	City	District	Students	3 yrs ago	Latest	Change
1	Trona High	Trona, CA	Trona Joint Unified	111	26.8%	12.3%	-14.5pp
2	Serrano High	Phelan, CA	Snowline Joint Unified	2,163	39.5%	30.1%	-9.4pp
3	Colony High	Ontario, CA	Chaffey Joint Union High	2,109	43.3%	37.3%	-6.0pp
4	Pacific High	San Bernardino, CA	San Bernardino City Unified	1,246	28.2%	24.2%	-4.0pp
5	Los Osos High	Rancho Cucamonga, CA	Chaffey Joint Union High	2,759	67.1%	65.0%	-2.1pp
6	Sultana High	Hesperia, CA	Hesperia Unified	2,098	34.1%	32.3%	-1.9pp
7	Indian Springs High	San Bernardino, CA	San Bernardino City Unified	1,810	31.3%	30.2%	-1.1pp
8	San Gorgonio High	San Bernardino, CA	San Bernardino City Unified	1,431	30.1%	29.6%	-0.4pp
9	Citrus Valley High	Redlands, CA	Redlands Unified	2,110	56.9%	56.8%	-0.2pp
10	San Bernardino High	San Bernardino, CA	San Bernardino City Unified	1,440	21.6%	21.9%	+0.3pp
11	Academy of Careers and Exploration	Helendale, CA	Helendale Elementary	285	26.1%	26.7%	+0.6pp
12	Alta Loma High	Alta Loma, CA	Chaffey Joint Union High	2,386	51.6%	52.6%	+1.0pp
13	Rim of the World High	Lake Arrowhead, CA	Rim of the World Unified	860	31.8%	32.9%	+1.1pp
14	Apple Valley High	Apple Valley, CA	Apple Valley Unified	2,211	27.3%	28.9%	+1.6pp
15	Redlands East Valley High	Redlands, CA	Redlands Unified	1,845	49.5%	51.8%	+2.3pp
16	Rancho Cucamonga High	Rancho Cucamonga, CA	Chaffey Joint Union High	3,221	56.5%	59.0%	+2.5pp
17	Chino Hills High	Chino Hills, CA	Chino Valley Unified	2,748	53.3%	56.3%	+3.0pp
18	Lakeview Leadership Academy	Victorville, CA	Victor Valley Union High	901	15.0%	18.1%	+3.1pp
19	Silver Valley High	Yermo, CA	Silver Valley Unified	392	44.0%	47.3%	+3.2pp
20	Arroyo Valley High	San Bernardino, CA	San Bernardino City Unified	2,692	24.1%	27.5%	+3.3pp
21	Yucca Valley High	Yucca Valley, CA	Morongo Unified	1,168	27.0%	30.6%	+3.7pp
22	Jurupa Hills High	Fontana, CA	Fontana Unified	1,739	34.2%	38.2%	+4.0pp
23	Chaffey High	Ontario, CA	Chaffey Joint Union High	3,127	34.9%	39.6%	+4.7pp
24	Redlands Senior High	Redlands, CA	Redlands Unified	2,189	55.9%	60.5%	+4.7pp
25	Victor Valley High	Victorville, CA	Victor Valley Union High	2,255	16.9%	21.8%	+4.9pp
26	Ontario High	Ontario, CA	Chaffey Joint Union High	1,994	40.9%	46.0%	+5.1pp
27	Etiwanda High	Etiwanda, CA	Chaffey Joint Union High	3,446	58.4%	63.6%	+5.2pp
28	Lucerne Valley High	Lucerne Valley, CA	Lucerne Valley Unified	322	24.9%	30.2%	+5.3pp
29	Adelanto High	Adelanto, CA	Victor Valley Union High	2,247	22.5%	27.9%	+5.4pp
30	Montclair High	Montclair, CA	Chaffey Joint Union High	2,515	44.0%	49.7%	+5.7pp
31	Barstow High	Barstow, CA	Barstow Unified	1,558	20.7%	26.8%	+6.1pp
32	Ruben S. Ayala High	Chino Hills, CA	Chino Valley Unified	2,541	60.4%	66.5%	+6.1pp
33	Granite Hills High	Apple Valley, CA	Apple Valley Unified	1,791	23.8%	30.1%	+6.4pp
34	Cajon High	San Bernardino, CA	San Bernardino City Unified	2,748	37.7%	44.3%	+6.6pp
35	Bloomington High	Bloomington, CA	Colton Joint Unified	1,794	22.5%	29.8%	+7.3pp
36	Colton High	Colton, CA	Colton Joint Unified	1,729	26.5%	34.1%	+7.6pp
37	Upland High	Upland, CA	Upland Unified	2,797	43.3%	51.3%	+8.1pp
38	Yucaipa High	Yucaipa, CA	Yucaipa-Calimesa Joint Unified	2,755	38.8%	46.9%	+8.1pp
39	Oak Hills High	Oak Hills, CA	Hesperia Unified	2,370	29.0%	37.2%	+8.2pp
40	Twentynine Palms High	Twentynine Palms, CA	Morongo Unified	719	28.1%	36.5%	+8.4pp
41	Chino High	Chino, CA	Chino Valley Unified	2,077	30.4%	39.0%	+8.6pp
42	Silverado High	Victorville, CA	Victor Valley Union High	2,165	21.4%	31.3%	+9.8pp
43	Hesperia High	Hesperia, CA	Hesperia Unified	2,405	24.7%	35.2%	+10.6pp
44	Summit High	Fontana, CA	Fontana Unified	2,725	44.7%	55.3%	+10.6pp
45	Fontana A. B. Miller High	Fontana, CA	Fontana Unified	1,950	34.8%	45.4%	+10.7pp
46	University Preparatory	Victorville, CA	Victor Valley Union High	1,136	69.6%	80.7%	+11.1pp
47	Don Antonio Lugo High	Chino, CA	Chino Valley Unified	1,256	32.4%	43.9%	+11.5pp
48	Needles High	Needles, CA	Needles Unified	269	16.9%	29.2%	+12.2pp
49	Cobalt Institute of Math and Science	Victorville, CA	Victor Valley Union High	1,058	44.9%	58.8%	+13.9pp
50	Henry J. Kaiser High	Fontana, CA	Fontana Unified	1,660	31.9%	46.8%	+14.9pp

Page 1 of 2 · top 56 of 56 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

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