Skip to main content

Chaffey Joint Union High School District

Login

    • Make changes to the header and footer on the "Edit Header and Footer" tab on the left.

    School Plan for Student Achievement

    SPSA

    LOHS School Plan for Student Achievement (PDF)

    Los Osos High School

    6001 Milliken Avenue
    Rancho Cucamonga, CA 91737
    (909) 477-6900 Phone

    Office Hours

    Mon - Fri: 7:30am - 4pm

    Non-Discrimination | Title IX | Anti-Harassment

    © 2018 Chaffey Joint Union High School District

    Chaffey Joint Union High School District

    211 West Fifth Street, Ontario, CA 91762
    (909) 988-8511 Phone

    Make changes to the header and footer on the "Edit Header and Footer" tab on the left.