Chaffey Adult School Home

About Us

The Chaffey Joint Union High School District serves the communities of Ontario, Montclair, Rancho Cucamonga, and portions of Fontana, Upland, Chino, and Mount Baldy. With over 25,000 students, the District is the fourth largest high school district in California. It has eight comprehensive high schools, a continuation high school, an online high school, a community day school, an adult school, and alternative programs. The District offers a wide variety of instructional options that provide a quality education for each student, every day. The District's well-prepared, dedicated, and highly qualified teachers and support personnel are second to none.
The Chaffey Joint Union High School District Board of Trustees are steadfast in the belief that "Nothing is more important than student learning and their achievement."
Our daily purpose encompasses our commitment:
"To provide student learning, and ultimately their achievement, of the prescribed curriculum that takes place in the classroom under the direction of the teacher." The Chaffey District supports this daily act. We realize that our efforts uniquely influence the future of our community and of this nation, and we are passionate about doing whatever it takes to prepare students to be successful and contributing citizens of the 21st century.
The Chaffey District has provided a quality education for high school students in the area since 1911. As the District continues to grow and progress, we are poised to meet the challenge of providing the finest quality education possible for every student. 
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All CJUHSD students will graduate ready for college and careers.

Recent News


We are no longer enrolling for CTE AND Computer Fee-Based classes for Spring 2024. We are still enrolling in classes for the following programs: English as a Second Language (ESL)/Citizenship, High School Diploma (HSD), HSE/GED, General Interest, and Parenting. Please check our website and look for the catalog in July for CTE registration dates for Fall 2024.

Upcoming Events

Principal's Message

George Matamala
Welcome to Chaffey Adult School! I’m thrilled and honored to serve as your new principal. Adult education holds a special place in my heart. My parents, Chilean immigrants, learned English and technical skills in adult schools much like CAS leading to increased financial stability and opportunities for our family as well as a lifetime of gratitude for the amazing adult school teachers, counselors, and staff.
Our theme for this year is We Are Here, and it’s my goal to continue to raise awareness of the fantastic programs available at your local adult school for free or for a very low cost. CAS is by far the best educational deal in town, and has been for over 57 years! Please consider partnering with us to make your educational hopes and aspirations a reality.
CAS offers programs in High School Equivalency (HSE/GED) test preparation, High School Diploma, English as a Second Language (ESL), Citizenship, Parent Education, Vocational and other non-credit classes. Chaffey Adult School is WASC Accredited and an authorized GED testing center. Classes are located at our main campus, 1802 E. 7th Street in Ontario, and at our satellite campus, 557 W. 5th Street in Ontario. Other classes are scheduled throughout the communities of Ontario, Montclair, and Rancho Cucamonga. 
Please contact us if you have any questions, and know that we are here for you! 
George Matamala, Ed.D.