Chaffey Joint Union High School District 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

Upcoming Events

Board Meeting

Time: 6:30 PM
Location: Ontario High School - Library Possible Virtual Meeting

District Facts

  • 60% of CJHUSD graduates meet the University of California and California State University A-G admissions requirements, making it a leader in San Bernardino County.
  • 90% of freshmen in the CJUHSD 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.
  • 9000 Advanced Placement exams are administered to students in the CJUHSD annually.

Superintendent's Message

Mat Holton, Superintendnet
Dear Chaffey District Students, Parents, and Guardians,
Students in the Chaffey District are completing their 1st semester of the 2020-2021 school year and preparing to take finals in a distance learning format. I realize there have been significant challenges involved in learning remotely, and I commend the students, teachers, and support staff for persevering through this difficult season. I am so proud of the way you have continually demonstrated new and innovative ways to overcome the obstacles presented by the COVID-19 pandemic. I would like to reassure you that teachers, counselors, and administrators at your school site are committed to providing remediation opportunities for anyone who may have struggled during 1st semester. They want you to succeed, and they are available to help you in any way that they can. Please call or email your teacher or school administrator if you need any assistance.
Unfortunately, due to the State’s closure mandates associated with the rise in COVID-19 cases, the District will need to begin the 2nd semester in the current distance learning model. At this time, new case rates are trending upward, and health officials are estimating we will not see a reverse trend until after the holidays. As we move toward the end of this 1st semester and begin 2nd semester, I am committed to continuing my conversations with the San Bernardino County Department of Public Health and other government officials to prepare and develop our reopening plan for when it is determined to be safe and permissible to return.
Students, I want to encourage you to finish 1st semester strong and then enjoy your much-deserved winter holiday break. Remember, if you need any help as you prepare for finals, it will be important for you to take advantage of interventions such as tutoring and individualized help during class time or teachers’ office hours. Support with finals and end-of-semester projects remain available for anyone who needs assistance.
Parents, please make sure that your student is using our three primary technology platforms: Outlook, Canvas, and Zoom. If they encounter any difficulties along the way, please feel free to call your school or the District office (909-988-8511 ext. 2501) with any questions or concerns; we are happy to assist you. You may also check the “Resources” tab on our website for information about technology support, mental health services, and more. I want to thank you for the positive encouragement and support you have provided for your student and their teachers during 1st semester. The resilience and tenacity our students have demonstrated during this season of distance learning, and will continue to show when we transition to a hybrid model, provide me with confidence that we will overcome any new hurdles, develop new skills, and amaze ourselves as we expand our expertise in navigating this digital world we find ourselves in. Thank you for your dedication and your patience.
Again, I want to thank you for the support and encouragement you continue to show our staff. We recognize all that you have done, and will continue to do, to assure your student’s success this year. We sincerely thank you! Please do not hesitate to reach out to teachers, counselors, administrators, or my office if you need any support. This is a uniquely challenging time for our students, and we will commit to do all we can to help them reach their goals.
 Stay safe!
Mathew Holton, Ed.D.