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 21.5%, against a median of 35.5% 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

21.5%

Median % Proficient

35.5%

LOWEST PROFICIENCY · ONTARIO, CALIFORNIA

#	School	City	District	Level	% FRL	Students	% Proficient
1	Ontario Center	Ontario, CA	Cucamonga Elementary	Elementary	75.4%	585	21.5%
2	Vina Danks Middle	Ontario, CA	Ontario-Montclair	Middle	90.3%	544	23.3%
3	Del Norte Elementary	Ontario, CA	Ontario-Montclair	Elementary	93.0%	428	25.1%
4	Arroyo Elementary	Ontario, CA	Ontario-Montclair	Elementary	76.3%	493	26.9%
5	Bon View Elementary	Ontario, CA	Ontario-Montclair	Elementary	92.0%	598	27.0%
6	Ray Wiltsey Middle	Ontario, CA	Ontario-Montclair	Middle	95.2%	727	27.2%
7	Euclid Elementary	Ontario, CA	Ontario-Montclair	Elementary	89.3%	572	30.4%
8	Berlyn Elementary	Ontario, CA	Ontario-Montclair	Elementary	91.7%	639	30.9%
9	Mariposa Elementary	Ontario, CA	Ontario-Montclair	Elementary	94.8%	537	31.1%
10	Vineyard Elementary	Ontario, CA	Ontario-Montclair	Elementary	86.7%	562	32.3%
11	Mountain View Elementary	Ontario, CA	Mountain View Elementary	Elementary	67.0%	564	32.6%
12	El Camino Elementary	Ontario, CA	Ontario-Montclair	Elementary	89.9%	476	33.2%
13	Sultana Elementary	Ontario, CA	Ontario-Montclair	Elementary	88.5%	589	33.3%
14	Hawthorne Elementary	Ontario, CA	Ontario-Montclair	Elementary	82.7%	549	33.5%
15	Lincoln Elementary	Ontario, CA	Ontario-Montclair	Elementary	90.4%	530	33.6%
16	Mission Elementary	Ontario, CA	Ontario-Montclair	Elementary	88.4%	571	34.2%
17	De Anza Middle	Ontario, CA	Ontario-Montclair	Middle	90.2%	510	35.5%
18	Richard Haynes Elementary	Ontario, CA	Ontario-Montclair	Elementary	89.2%	641	35.5%
19	Oaks Middle	Ontario, CA	Ontario-Montclair	Middle	89.5%	668	35.8%
20	Chaffey High	Ontario, CA	Chaffey Joint Union High	High	81.5%	3,127	36.7%
21	Levi H. Dickey Elementary	Ontario, CA	Chino Valley Unified	Elementary	83.8%	413	37.3%
22	Elderberry Elementary	Ontario, CA	Ontario-Montclair	Elementary	92.5%	544	38.2%
23	Colony High	Ontario, CA	Chaffey Joint Union High	High	69.7%	2,109	38.6%
24	Creek View Elementary	Ontario, CA	Mountain View Elementary	Elementary	66.6%	566	38.8%
25	Central Language Academy	Ontario, CA	Ontario-Montclair	Elementary	65.2%	736	40.8%
26	Ontario High	Ontario, CA	Chaffey Joint Union High	High	86.7%	1,994	41.0%
27	Corona Elementary	Ontario, CA	Ontario-Montclair	Elementary	91.1%	414	43.8%
28	Grace Yokley Junior High	Ontario, CA	Mountain View Elementary	Middle	66.0%	606	44.8%
29	Liberty Elementary	Ontario, CA	Chino Valley Unified	Elementary	72.7%	578	45.1%
30	Woodcrest Junior High	Ontario, CA	Chino Valley Unified	Middle	87.7%	324	49.2%
31	Ranch View Elementary	Ontario, CA	Mountain View Elementary	Elementary	57.2%	738	49.3%
32	Vista Grande Elementary	Ontario, CA	Ontario-Montclair	Elementary	77.9%	358	51.0%
33	Park View Elementary	Ontario, CA	Mountain View Elementary	Elementary	34.4%	844	58.6%
34	Edison Elementary	Ontario, CA	Ontario-Montclair	Elementary	72.8%	736	66.6%

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.