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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


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
Dear Students and Families,
I hope you had a restful Thanksgiving Break. Thank you for all you do to make our school community a wonderful place to learn and grow. 
With only one week of school before first semester finals, it is important that students continue to work hard to finish the semester successfully. Final progress reports have been e-mailed via Parent Square or they can be viewed on our Aeries Parent Portal. Students and parents should use that information to assess progress in each class. Parents and guardians, please continue to help your son or daughter by reviewing their progress and checking their attendance to make sure they are attending EVERY class, EVERY day. 
I encourage students to take advantage of after school tutoring, open Tuesday-Thursday, 3:30-4:30PM in the library, along with the many other tutoring opportunities that our teachers provide. We also have a ROAR (Saturday School) session on December 9th and 16th. Lastly, there will be a Cocoa Cram study session for 9th graders on Dec. 14.
Finals will be held on Tuesday, Wednesday, and Thursday, December 19th-21st (these are minimum days). All students should begin preparing for finals now by reviewing the content they have learned. Students, it is critical that you know what to expect on your final exams, how these exams will affect your final grade in the course, and how best to study so that you can show what you know. Friday, Dec. 22nd is a non-student day.
Tuesday, December 19, 2023                     Bell Schedule
       Period 0                                                7:20 am - 8:23 am
       Period 1                                                8:30 am - 10:30 am
       BRUNCH                                              10:30 am -10:43 am
       Period 2                                                10:50 am - 12:50 pm
Wednesday, December 20, 2023               Bell Schedule
       Period 0                                                7:20 am - 8:23 am
       Period 3                                                8:30 am - 10:30 am
       BRUNCH                                              10:30 am -10:43 am
       Period 4                                                10:50 am - 12:50 pm
Thursday, December 21, 2023                  Bell Schedule
       Period 5                                                8:30 am - 10:30 am
       BRUNCH                                              10:30 am -10:43 am
       Period 7                                                10:50 am - 12:50 pm
**8th period exams are taken during the regular class period:
Wednesday and Thursday, December 20 and 21, 2023
I wish you all a safe and happy holiday season. Enjoy the winter break and I look forward to seeing students and staff when we return on Monday, January 8th.
Go Tigers!
Christina Martinez
Principal, Chaffey High School