allk12 · Rankings · Lowest proficiency · California · Ontario

The lowest-performing public schools by test proficiency in Ontario, California

Across Ontario, California, 34 public schools are ranked here, ranked by the lowest composite state-assessment proficiency. Ontario Center leads the list at 24.1%, against a median of 37.3% 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

Ontario, California

Best % Proficient

24.1%

Median % Proficient

37.3%

LOWEST PROFICIENCY · ONTARIO, CALIFORNIA

#	School	City	District	Level	% FRL	Students	% Proficient
1	Ontario Center	Ontario, CA	Cucamonga Elementary	Elementary	75.4%	585	24.1%
2	Vina Danks Middle	Ontario, CA	Ontario-Montclair	Middle	90.3%	544	26.0%
3	Del Norte Elementary	Ontario, CA	Ontario-Montclair	Elementary	93.0%	428	27.0%
4	Ray Wiltsey Middle	Ontario, CA	Ontario-Montclair	Middle	95.2%	727	28.7%
5	Mariposa Elementary	Ontario, CA	Ontario-Montclair	Elementary	94.8%	537	28.8%
6	Bon View Elementary	Ontario, CA	Ontario-Montclair	Elementary	92.0%	598	29.2%
7	Berlyn Elementary	Ontario, CA	Ontario-Montclair	Elementary	91.7%	639	29.3%
8	Arroyo Elementary	Ontario, CA	Ontario-Montclair	Elementary	76.3%	493	29.3%
9	Euclid Elementary	Ontario, CA	Ontario-Montclair	Elementary	89.3%	572	31.4%
10	Mountain View Elementary	Ontario, CA	Mountain View Elementary	Elementary	67.0%	564	32.1%
11	Mission Elementary	Ontario, CA	Ontario-Montclair	Elementary	88.4%	571	33.0%
12	Hawthorne Elementary	Ontario, CA	Ontario-Montclair	Elementary	82.7%	549	34.0%
13	Sultana Elementary	Ontario, CA	Ontario-Montclair	Elementary	88.5%	589	34.6%
14	Lincoln Elementary	Ontario, CA	Ontario-Montclair	Elementary	90.4%	530	34.8%
15	Richard Haynes Elementary	Ontario, CA	Ontario-Montclair	Elementary	89.2%	641	34.8%
16	Vineyard Elementary	Ontario, CA	Ontario-Montclair	Elementary	86.7%	562	35.4%
17	El Camino Elementary	Ontario, CA	Ontario-Montclair	Elementary	89.9%	476	36.7%
18	Colony High	Ontario, CA	Chaffey Joint Union High	High	69.7%	2,109	38.0%
19	Chaffey High	Ontario, CA	Chaffey Joint Union High	High	81.5%	3,127	38.2%
20	Levi H. Dickey Elementary	Ontario, CA	Chino Valley Unified	Elementary	83.8%	413	38.5%
21	De Anza Middle	Ontario, CA	Ontario-Montclair	Middle	90.2%	510	38.6%
22	Oaks Middle	Ontario, CA	Ontario-Montclair	Middle	89.5%	668	40.2%
23	Creek View Elementary	Ontario, CA	Mountain View Elementary	Elementary	66.6%	566	40.3%
24	Elderberry Elementary	Ontario, CA	Ontario-Montclair	Elementary	92.5%	544	42.1%
25	Central Language Academy	Ontario, CA	Ontario-Montclair	Elementary	65.2%	736	42.9%
26	Ontario High	Ontario, CA	Chaffey Joint Union High	High	86.7%	1,994	43.5%
27	Grace Yokley Junior High	Ontario, CA	Mountain View Elementary	Middle	66.0%	606	45.8%
28	Corona Elementary	Ontario, CA	Ontario-Montclair	Elementary	91.1%	414	46.0%
29	Ranch View Elementary	Ontario, CA	Mountain View Elementary	Elementary	57.2%	738	46.2%
30	Woodcrest Junior High	Ontario, CA	Chino Valley Unified	Middle	87.7%	324	48.2%
31	Vista Grande Elementary	Ontario, CA	Ontario-Montclair	Elementary	77.9%	358	49.4%
32	Liberty Elementary	Ontario, CA	Chino Valley Unified	Elementary	72.7%	578	50.4%
33	Park View Elementary	Ontario, CA	Mountain View Elementary	Elementary	34.4%	844	63.1%
34	Edison Elementary	Ontario, CA	Ontario-Montclair	Elementary	72.8%	736	68.7%

Page 1 of 1 · top 34 of 34 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.