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

WeTip - Be the solution


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

Mrs. Martinez
Dear Parents and Students,
Welcome to Chaffey High School, home of the Tigers, for the 2022-23 school year. I hope you are having an amazing summer! 
We look forward to welcoming our incoming 9th graders, the class of 2026, and all students on Wednesday, August 10th.  Expect to see staff and a grand presence of students from band, ASB, Cheer, Link Crew, and more out in front of the school as we kick off the school year and welcome our Tigers to Chaffey High.
Please look for your summer mailer through the US postal service to arrive no later than July 18.  Please read all the documents enclosed, and make sure that all the forms in the registration packet are completed and bring them to turn in on registration/schedule pick up day.  Students will begin to report the last week of July for Schedule pick up.  See the schedule below for exact times, dates, and locations.  
For parents of freshmen, we invite you to attend our Parent Orientation Meeting.  This presentation will cover the high school experience and focus on how to help your student become academically successful in high school and beyond.  
Finally, we continue to work on streamlining our behavior and learning expectations by incorporating Positive Behavior Intervention and Support (PBIS) strategies on our campus. We have established three “golden rules” that are the foundation of how we interact with each other. Tigers are:
Respectful—treat people the way you would like to be treated 
Responsible—follow school rules
Ready to Learn—be on time, in the appropriate place on campus, and with the required materials
We believe that these “golden rules” will help students be successful in school, career, and life in general.
Once again, I look forward to seeing all of you on August 10th as we begin the new school year. As always, please feel free to contact me with your questions or concerns and enjoy the rest of your summer. 
Go Tigers!
Christina Martinez