Address

6001 MILLIKEN AVE.
RANCHO CUCAMONGA, CA 91737
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Phone Number

909-477-6900

Website

http://www.cjuhsd.net

Important Links: Board Board Agendas Board Bulletins Board Meeting Board Meeting Board Meeting Board Meeting Board Meeting Schedule Current Board Agenda Instructional Calendars Instructional Calendars School Board

School Type

Public School

Grades Served

09-12

School Level

High

Also Known As

Los Osos High (Official Name Supplied)

Student and Staff Info

Student Enrollment: 3,262

--Gathered from public sources that schools self report. These may be inaccurate.--

School District

Chaffey Joint Union High

Interactive Map

California Education Info

California School District Maps and Boundaries in 2026: What Parents, Educators, and Communities Should Know

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Rancho Cucamonga High School in Rancho Cucamonga, CA (1.1 miles)

Victoria Groves Elementary School in Alta Loma, CA (1.2 miles)

Carleton P. Lightfoot Elementary School in Alta Loma, CA (1.2 miles)

Related School Info

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Information is generated using publicly accessible school-supplied data and may be inaccurate

Last Updated: 2026-06-05 22:41:21 || School Id: 7976