Los Osos High School in Rancho Cucamonga, California on DonorsChoose

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About this school

Los Osos High School is a suburban public school in Rancho Cucamonga, California that is part of Chaffey Joint Union High School District. It serves 2,759 students in grades 9 - 12 with a student/teacher ratio of 22.8:1. Its teachers have had 40 projects funded on DonorsChoose.

Equity Focus School

Support towards this school will directly impact historically underfunded classrooms.

Public School

Grades 9 - 12

2,759 Students

121 Teachers

6001 Milliken Ave

Rancho Cucamonga, CA 91737 View local requests

http://www.cjuhsd.net

Direct, proactive support

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Ms. Vero, a DonorsChoose teacher for 9 years.

Kindergarten teacher at PS81 - Robert J. Christen School in Bronx, NY

Los Osos High School Teachers on DonorsChoose

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Los Osos High School Demographics

68%

of students receive free or reduced price lunch

Source: the National Center for Education Statistics

66%

of students are Black, Latino, Native American, or Asian

Schools in districts that mainly serve students of color receive substantially less state and local support than similar districts that serve primarily White students. Learn more about this gap, why it exists, and how you can help close it.

Los Osos High School Support on DonorsChoose Last updated Feb 21, 2026

DonorsChoose makes it easy for anyone to help a teacher in need, moving us closer to a nation where students in every community have the tools and experiences they need for a great education.