Largest Schools in Saddleback Valley Unified (2025)

Schools with the highest enrollment. Ranked by the Success Index (US) from official American data; 30 schools in Saddleback Valley Unified, California. Rank positions shown on each profile are within United States and California.

#	School	Sector	Enrollment	Success Index (US)	Key result	Students
1	Trabuco Hills High Mission Viejo · High · Grades 9–12	Public	2,475	61.8 Top 50%	52% Math proficiency	2,475
2	El Toro High Lake Forest · High · Grades 9–12	Public	1,902	57.6 Top 50%	52% Math proficiency	1,902
3	Mission Viejo High Mission Viejo · High · Grades 9–12	Public	1,566	56.6 Top 50%	44% Math proficiency	1,566
4	Laguna Hills High Laguna Hills · High · Grades 9–12	Public	1,317	48.5 Lower 50%	40% Math proficiency	1,317
5	Rancho Santa Margarita Intermediate Rancho Santa Margarita · Middle · Grades 7–8	Public	1,153	71.5 Top 25%	63% Math proficiency	1,153
6	Foothill Ranch Elementary Foothill Ranch · Elementary · Grades K–6	Public	990	72.0 Top 25%	68% Math proficiency	990
7	Melinda Heights Elementary Rancho Santa Margarita · Elementary · Grades K–6	Public	950	70.3 Top 25%	66% Math proficiency	950
8	Ralph A. Gates DLI Magnet Elementary Lake Forest · Elementary · Grades K–6	Public	896	34.7 Lower 50%	41% Math proficiency	896
9	Serrano Intermediate Lake Forest · Middle · Grades 7–8	Public	868	57.0 Top 50%	50% Math proficiency	868
10	Portola Hills Elementary Trabuco Canyon · Elementary · Grades K–6	Public	809	74.6 Top 25%	73% Math proficiency	809
11	La Paz Intermediate Mission Viejo · Middle · Grades 7–8	Public	713	68.6 Top 25%	60% Math proficiency	713
12	Trabuco Mesa Elementary Rancho Santa Margarita · Elementary · Grades K–6	Public	640	66.4 Top 50%	63% Math proficiency	640
13	Lake Forest Elementary Lake Forest · Elementary · Grades K–6	Public	640	50.6 Top 50%	48% Math proficiency	640
14	Rancho Canada Elementary Lake Forest · Elementary · Grades K–6	Public	633	67.1 Top 50%	63% Math proficiency	633
15	Los Alisos Intermediate Mission Viejo · Middle · Grades 7–8	Public	595	40.7 Lower 50%	38% Math proficiency	595
16	La Madera Elementary Lake Forest · Elementary · Grades K–6	Public	554	66.7 Top 50%	64% Math proficiency	554
17	De Portola Elementary Mission Viejo · Elementary · Grades K–6	Public	540	78.0 Top 25%	75% Math proficiency	540
18	Valencia Elementary Laguna Hills · Elementary · Grades K–6	Public	525	73.2 Top 25%	74% Math proficiency	525
19	Santiago STEAM Magnet Elementary Lake Forest · Elementary · Grades K–6	Public	517	34.5 Lower 50%	26% Math proficiency	517
20	Lomarena Elementary Laguna Hills · Elementary · Grades K–6	Public	487	50.5 Top 50%	55% Math proficiency	487
21	Cielo Vista Elementary Rancho Santa Margarita · Elementary · Grades K–6	Public	487	42.3 Lower 50%	43% Math proficiency	487
22	Robinson Elementary Trabuco Canyon · Elementary · Grades K–6	Public	486	66.1 Top 50%	57% Math proficiency	486
23	Montevideo Elementary Mission Viejo · Elementary · Grades K–6	Public	444	59.7 Top 50%	57% Math proficiency	444
24	Olivewood Elementary Lake Forest · Elementary · Grades K–6	Public	396	19.5 Lower 50%	28% Math proficiency	396
25	Del Cerro Elementary Mission Viejo · Elementary · Grades K–6	Public	390	56.9 Top 50%	57% Math proficiency	390
26	Del Lago Elementary Mission Viejo · Elementary · Grades K–6	Public	362	48.3 Lower 50%	43% Math proficiency	362
27	Glen Yermo Elementary Mission Viejo · Elementary · Grades K–6	Public	308	38.2 Lower 50%	37% Math proficiency	308
28	Linda Vista Magnet Elementary Mission Viejo · Elementary · Grades K–6	Public	263	23.8 Lower 50%	27% Math proficiency	263
29	San Joaquin Elementary Laguna Hills · Elementary · Grades K–6	Public	221	29.3 Lower 50%	32% Math proficiency	221
30	Trabuco Elementary Trabuco Canyon · Elementary · Grades K–6	Public	90	65.6 Top 50%	54.5% Math proficiency	90

Trabuco Hills High in Mission Viejo leads the 2025 list of largest schools in Saddleback Valley Unified with Enrollment 2,475. Of the 30 schools shown, 30 are public.

For the full picture see the wider California largest schools rankings, every school on the Saddleback Valley 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 Saddleback Valley Unified?

Trabuco Hills High in Mission Viejo, California ranks first among largest schools in Saddleback Valley Unified with Enrollment 2,475 (Enrollment: 2,475).

How are largest schools in Saddleback Valley 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.