publichighGrade 9-12

Los Osos High

6001 Milliken Ave., Rancho Cucamonga, CA 91737, United States

+1 (909) 477-6900

http://www.cjuhsd.net

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Overall Rating

Location

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Los Osos High Overview

About This School

Los Osos High is a public high in Rancho Cucamonga, California, serving 2,759 students in grades 9-12. The school maintains a staff of 107 teachers with an average salary of $133,492 and a student-teacher ratio of 25:1. Guidance services are provided through a ratio of 394 students per counselor. The student body is evenly divided between male and female students. The demographic composition includes 41% Hispanic, 24% White, 23% Asian, 6% Black, and 5% students of two or more races.

2,759

Total Students

Grade 9-12

25:1

Student-Teacher Ratio

107 full-time teachers

Academic Performance

Percentage of students who met or exceeded state standards

English Language Arts0%

Mathematics0%

Science0%

School Information

School Type

public

Grade Levels

Grade 9-12

County

San Bernardino County

Students per Counselor

394:1

Los Osos High Academics & Test Scores

Test Scores

State assessment results showing percentage of students proficient or above

N/A

English Language Arts

N/A

Mathematics

N/A

Science

Class Information

25:1

Student-Teacher Ratio

City Avg: 22.3:1

State Avg: 20.5:1

394

Students per Counselor

Los Osos High Teachers & Staff

Teaching Staff

Total Full-Time Teachers

107

Average Teacher Salary

$133,492

City Avg: $113,133

State Avg: $106,740

Based on state average salaries for full-time teachers

Support Staff

Student-Teacher Ratio25:1

Students per Counselor394:1

Los Osos High Student Demographics

Student Body

50.13%

Male

49.84%

Female

Total Enrollment: 2,759 students

Racial & Ethnic Diversity

White24.43%

Hispanic41.39%

Asian22.94%

Black5.94%

Two or More Races4.89%

Native American0.25%

Los Osos High Reviews

Frequently Asked Questions About Los Osos High

Q: What is Los Osos High?

A: Los Osos High is a high public located in Rancho Cucamonga.

Q: How many students attend Los Osos High?

A: Los Osos High has approximately 2,759 students enrolled.

Q: What is the student-teacher ratio at Los Osos High?

A: The student-teacher ratio at Los Osos High is 25:1.

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Detailed Information about Los Osos High

Data sourced from NCES, CCD, and state education agencies. Last verified: May 2026. See methodology →

Schoolary Research Team

Verified with NCES & state education agency data

About Los Osos High - Rancho Cucamonga, CA

Quick Facts about Los Osos High
School Name	Los Osos High
School Type	public
Grade Levels	Grade 9-12
Location	6001 Milliken Ave., Rancho Cucamonga, CA 91737, Rancho Cucamonga, CA
County	San Bernardino County
Phone	+1 (909) 477-6900
Total Students	2,759
Student-Teacher Ratio	25:1
Full-Time Teachers	107
Rating	/10
ELA Proficiency	%
Math Proficiency	%
Science Proficiency	%

Frequently Asked Questions about Los Osos High

What is Los Osos High?

Los Osos High is a high public located in Rancho Cucamonga.

How many students attend Los Osos High?

Los Osos High has approximately 2,759 students enrolled.

What is the student-teacher ratio at Los Osos High?

The student-teacher ratio at Los Osos High is 25:1.

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