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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

WeTip - Be the solution

WeTip

Be the Solution. If you have information regarding crime or misconduct at your school, call WeTip anonymously.

The Chaffey District Cares

The Chaffey District cares about your mental well-being. We partner with community agencies and mental health professionals to provide support to our students and staff. If you, or someone you know, is in crisis please contact the Community Crisis Response Team (909) 421-9233 - Click 'Read Full Story' for more information.

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
Tigers,
 
Welcome back and happy new year! I hope you had a safe and restful Winter Break and that you’re excited about second semester. 2023 was another year filled with change, challenge, and opportunity. As we head into 2024, let’s prepare ourselves to make the most of the possibilities that lie ahead. 
 
If you haven’t already given some thought to your New Year’s resolutions, I encourage you to reflect and set some academic and personal goals. Remember: you are starting fresh. You have resources available to you and people at school who love and care for you. Together, we can take it to a whole new level. Keep in mind all the support that is within your reach:
 
●        After school tutoring
●        6th period Academy
●        ROAR on Saturday
●        Progress monitoring on Canvas
●        Your counselor
●        Your teachers
●        Your principal
 
I wish all our athletes and performers the best of luck with the current season of games and performances. Stay strong, focused, and continue to strive for excellence in all areas of your life. 
 
Lastly, please be aware that school is not in session on the following dates:
 
Monday, January 15th  – MLK Jr. Day
Monday, February 12th – Lincoln’s Day
Monday, February 19th – Presidents’ Day
 
Tigers, I can’t wait to see all the amazing things you will accomplish in 2024!
 
Principal Martinez