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Alta Loma High School
Chaffey District Online High School
Chaffey High School
Colony High School
Chaffey Community Day School
Etiwanda High School
Los Osos High School
Montclair High School
Ontario High School
Rancho Cucamonga High School
Valley View High School
Chaffey Adult School

Principal

Smling man with a clean shaven head and face with a blue suit and yellow power tie on.

Eric Cypher
Principal
Email: eric.cypher@cjuhsd.net
Phone: (909) 477-6900 Ext 2020

Kristin Allison
Administrative Secretary II
Email: kristin.allison@cjuhsd.net
Phone: (909) 477-6900 Ext 2021

Los Osos High School

Address: 6001 Milliken AveRancho Cucamonga, CA 91737

Phone: +1 909-477-6900

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Notice of Non-Discrimination: In compliance with federal law, our school district administers all education programs, employment activities and admissions without discrimination against any person on the basis of gender, race, color, religion, national origin, age, or disability.