Los Osos High

Virtual

Regular School · Rancho Cucamonga, CA

Los Osos High is a regular school school in Rancho Cucamonga, California, serving grades 09–12 with 2,759 students enrolled (SY 2024-2025). The student-teacher ratio is 25.8:1.

Level

High

Grades

09 – 12

Enrollment

2,759

Teachers (FTE)

107.1

Student–Teacher Ratio

25.8:1

Status

Open

Lunch Program Participation

Yes under Community Eligibility Option (CEO)

Student Demographics (SY 2024-2025)

Race / Ethnicity	Students	Share
Hispanic/Latino	1,142	41%
White	674	24%
Asian	633	23%
Black or African American	164	6%
Two or more races	135	5%
American Indian / Alaska Native	7	0%
Native Hawaiian / Pacific Islander	3	0%
Not Specified	1	0%
Total enrollment	2,759	1,383M / 1,375F

English Language Learners: 102 (4% of enrollment) · SY 2021–22

Academic Performance (SY 2021-2022)

Metric	This School	State Avg	Tested
Math Proficiency	64.0% +30.1pp	33.9%	436
Reading Proficiency	77.0% +28.3pp	48.7%	426
Science Proficiency	41.0%	—	204
4-Year Graduation Rate	95.0%	—

Source: EDFacts, SY 2020–2021. Suppressed values (e.g. <=10%) indicate fewer than the minimum reportable threshold.

Programs & Discipline

AP Courses

Yes (17)

925 students enrolled

Gifted & Talented

Program offered

1,284 students enrolled

SAT/ACT Takers

240

students tested · SY 2021–22

Out-of-School Suspensions

2.4% of enrollment · SY 2021–22

Source: Civil Rights Data Collection (CRDC), Office for Civil Rights & EDFacts.

Lunch Program (SY 2024-2025)

Category	Students	% of School
Total enrollment (est.)	2,759	100%

Contact & Location

6001 Milliken Ave.

Rancho Cucamonga, CA 91737

Phone: (909)477-6900

http://www.cjuhsd.net

District

Chaffey Joint Union High

Per-pupil expenditure: $20,989

District enrollment: 23,058

Other Schools in District

View all 10 schools →

Related Data

Neighborhood demographics (ZIP 91737) → CensusDepth.com
California population & income data → CensusDepth.com
California teacher salaries → WageDepth.com

NCES ID

060816010605

Data sources: NCES CCD SY 2024-2025 (directory, staff, lunch), EDFacts SY 2020-21 (assessments), CRDC SY 2021-22 (programs & discipline), SEDA v6.0 (achievement estimates). Updated annually. NCES CCD