Largest Schools in Pomona Unified (2025)

Schools with the highest enrollment. Ranked by the Success Index (US) from official American data; 33 schools in Pomona Unified, California. Rank positions shown on each profile are within United States and California.

#	School	Sector	Enrollment	Success Index (US)	Key result	Students
1	Garey High Pomona · High · Grades 9–12	Public	1,567	17.8 Lower 50%	17% Math proficiency	1,567
2	Diamond Ranch High Pomona · High · Grades 9–12	Public	1,542	42.6 Lower 50%	36% Math proficiency	1,542
3	Pomona High Pomona · High · Grades 9–12	Public	993	21.1 Lower 50%	17% Math proficiency	993
4	Ganesha High Pomona · High · Grades 9–12	Public	895	17.9 Lower 50%	11% Math proficiency	895
5	Vejar Elementary Pomona · Elementary · Grades K–8	Public	741	14.9 Lower 50%	23% Math proficiency	741
6	Lorbeer Middle Diamond Bar · Middle · Grades 7–8	Public	688	37.0 Lower 50%	36% Math proficiency	688
7	Emerson Middle Pomona · Middle · Grades 6–8	Public	664	14.6 Lower 50%	15% Math proficiency	664
8	Kingsley Elementary Pomona · Elementary · Grades K–5	Public	656	13.0 Lower 50%	18% Math proficiency	656
9	Washington Elementary Pomona · Elementary · Grades K–5	Public	645	14.7 Lower 50%	27% Math proficiency	645
10	Cortez Elementary Pomona · Elementary · Grades K–8	Public	607	29.1 Lower 50%	39% Math proficiency	607
11	Alcott Elementary Pomona · Elementary · Grades K–6	Public	606	15.4 Lower 50%	23% Math proficiency	606
12	Fremont Academy of Engineering and Design Pomona · High · Grades 7–12	Public	597	15.7 Lower 50%	14% Math proficiency	597
13	Simons Middle Pomona · Middle · Grades 6–8	Public	578	20.1 Lower 50%	21% Math proficiency	578
14	Lexington Elementary Pomona · Elementary · Grades K–8	Public	537	29.9 Lower 50%	45% Math proficiency	537
15	Philadelphia Elementary Pomona · Elementary · Grades K–6	Public	535	18.9 Lower 50%	23% Math proficiency	535
16	Roosevelt Elementary Pomona · Elementary · Grades K–6	Public	529	24.6 Lower 50%	36% Math proficiency	529
17	Pantera Elementary Diamond Bar · Elementary · Grades K–6	Public	512	69.7 Top 25%	72% Math proficiency	512
18	San Jose Elementary Pomona · Elementary · Grades K–8	Public	511	21.6 Lower 50%	27% Math proficiency	511
19	Arroyo Elementary Pomona · Elementary · Grades K–6	Public	479	12.6 Lower 50%	22% Math proficiency	479
20	Ranch Hills Elementary Pomona · Elementary · Grades K–6	Public	449	54.2 Top 50%	54% Math proficiency	449
21	Decker Elementary Pomona · Elementary · Grades K–6	Public	437	23.0 Lower 50%	26% Math proficiency	437
22	Allison Elementary Pomona · Elementary · Grades K–6	Public	427	25.4 Lower 50%	37% Math proficiency	427
23	Lopez Elementary Pomona · Elementary · Grades K–6	Public	394	17.9 Lower 50%	26% Math proficiency	394
24	Golden Springs Elementary Diamond Bar · Elementary · Grades K–6	Public	388	46.1 Lower 50%	52% Math proficiency	388
25	Madison Elementary Pomona · Elementary · Grades K–6	Public	382	17.4 Lower 50%	29% Math proficiency	382
26	Lincoln Elementary Pomona · Elementary · Grades K–6	Public	345	18.6 Lower 50%	27% Math proficiency	345
27	Harrison Elementary Pomona · Elementary · Grades K–8	Public	328	19.5 Lower 50%	28% Math proficiency	328
28	Westmont Elementary Pomona · Elementary · Grades K–6	Public	327	26.5 Lower 50%	37% Math proficiency	327
29	Kellogg Polytechnic Elementary Pomona · Elementary · Grades K–6	Public	302	21.3 Lower 50%	27% Math proficiency	302
30	Barfield Elementary Pomona · Elementary · Grades K–6	Public	282	13.4 Lower 50%	17% Math proficiency	282
31	La Verne Science and Technology Charter Pomona · Elementary · Grades K–6	Charter	270	23.4 Lower 50%	27% Math proficiency	270
32	Armstrong Elementary Diamond Bar · Elementary · Grades K–6	Public	251	49.8 Lower 50%	42% Math proficiency	251
33	Marshall Middle Pomona · Middle · Grades 6–8	Public	249	22.5 Lower 50%	18% Math proficiency	249

Garey High in Pomona leads the 2025 list of largest schools in Pomona Unified with Enrollment 1,567. Of the 33 schools shown, 32 are public, 1 are charter.

For the full picture see the wider California largest schools rankings, every school on the Pomona Unified page, or the comparison tool to put a shortlist side by side.

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Frequently asked questions

What is the best largest school in Pomona Unified?

Garey High in Pomona, California ranks first among largest schools in Pomona Unified with Enrollment 1,567 (Enrollment: 1,567).

How are largest schools in Pomona Unified ranked?

Schools with the highest enrollment. Only schools eligible for the Success Index (US) are included; the index is shown alongside for context.

Are these 2025 rankings official?

No. They are computed by Success Tutoring from official American data (Urban Institute Education Data Portal (NCES CCD, EDFacts); NCES Common Core of Data). States set their own assessments and proficiency cut scores, so proficiency rates are most comparable within a state. Use the state rankings for like-for-like comparisons.