California›Schools›Los Osos High

Los Osos High

PublicRegularGrades 9–12
Rancho Cucamonga, California · Chaffey Joint Union High
SCHOOL SNAPSHOT
Students2,759
Student:Teacher25.8:1
Free/Reduced Lunch44%
Title INo
Los Osos
OverviewEnrollmentDemographicsPerformanceAttendanceOutcomesBehaviourWorkforce

Key Indicators

At-a-glance snapshot, compared to state averages where available

State avg: 489
2,759
Total Enrollment
State avg: 65%
44%-21.5pp
Free/Reduced Lunch
25.8:1
Student : Teacher
Public
Sector
No
Title I
District
Governance
9–12
Grade Span
High
Level

Overview

Los Osos High is a public high serving grades 9–12 in Rancho Cucamonga, California. The school enrolls 2,759 students. It is part of the Chaffey Joint Union High district.

Source: NCES CCD (2023)

Strengths & Things to Consider

Indicators pulled CCD and benchmarked against California state averages. This is not a ranking — different families value different things.

Things to Consider

Higher-than-average student-to-teacher ratio
25.8:1 — larger classes than typical
Very large student body
2,759 students — some students report feeling anonymous in very large high schools

Key Facts

SectorPublic
School TypeRegular
LevelHigh
Grade Span9–12
DistrictChaffey Joint Union High
County6071
CityRancho Cucamonga
ZIP91737
CharterNo
MagnetNo
Title INo
NCES School ID060816010605

Student Demographics

Total Enrollment2,759
White0.5%
Hispanic / Latino37.4%
Black / African American21.3%
Asian6.1%
American Indian / Alaska Native31.6%
Native Hawaiian / Pacific Islander0.5%
Two or More Races2.7%

Race / Ethnicity Distribution

White
0.5%
Hispanic
37.4%
Black
21.3%
Asian
6.1%
Two+
2.7%
Source: NCES CCD (2023)

Equity & Title I

In the United States, Free/Reduced Lunch (FRL) eligibility is the primary federal proxy for student poverty. Schools with 40% or more FRL-eligible students typically qualify for Title I school-wide programs.

FRL %44%
State Avg65%
Title INo
Source: NCES CCD (2023)