Chaffey High 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

Unity Conference Flyer

Back to School Unity Conference

A virtual summit designed for families to learn skills in navigating a return to school with focus on valuing humanity while considering the realities of two pandemics. This is a free event and pre-registration is required to attend.

Upcoming Events

School Facts

  • 55% of Chaffey High School graduates meet the University of California and California State University A-G admissions requirements, making it a leader in San Bernardino County.
  • 85% of freshmen at Chaffey High School complete their first year of high school on track to graduate.
  • The CJUHSD has been named a Top Workplace by the Press-Enterprise and Inland News Group.
  • 700 Advanced Placement exams are administered to students at Chaffey High School annually.

Principal's Message

Christina Martinez, Principal
We are near the end of the school year with our last day being on Thursday, May 20th, 2021.  Our graduation ceremonies will be held on the following day, Friday, May 21st.  Seniors will attend one of three ceremonies depending on their last name:
Ceremony Times
10AM  A through Gildernew
2PM     Gipson through Penuelas
6PM     Peraza through Z
All graduation ceremonies will be held in Graber Stadium.
Finals are also around the corner and will be taking place May 17th - 20thPlease note that due to finals week, Monday, May 17th will be a regular school day schedule and not just a second period check-in.  
Finals Week Schedule
• May 17, Monday - Periods 1-3
• May 18, Tuesday - Periods 4-6
• May 19, Wednesday - Periods 1-3
• May 20, Thursday - Periods 4-6
• No School Friday
*Students in a 0 or 7th period, see your 0 or 7th period teacher for finals information.
Some students are taking online classes needed for graduation and/or college admissions. They must complete those by May 20th.  If needed, please reach out to our Counseling Office for support.  We are happy to help!
Lastly, I would like to take this opportunity to say thank you to our staff, students, and parents. Although we were confronted with historical challenges beginning the year with distance learning, and now hybrid learning, our students and staff have given their best efforts to rise to the challenge. Together, we continue to make great strides as a school. Your support is vital to our vision that all students will graduate college and career ready.
As always, please don’t hesitate to contact me with any questions or concerns.
Go Tigers,
Christina Martinez, Principal