Chaffey Joint Union High School District Home

Superintendent's Message

Mat Holton
We will soon begin the fourth and final quarter of the school year, and I am so proud of the patience and perseverance demonstrated by our staff and students as we continue to rebound after the COVID-19 pandemic. Students are once again excelling in academics, athletics, and the arts despite the obstacles they have faced during the past few years. Five of our schools placed in the top ten in the annual Academic Decathlon competition, several athletic teams are competing in CIF and State championships, and our drama, dance, choir, and band programs are all performing well. I am proud of our amazingly talented students and staff! I am encouraged by the progress we have made and am excited for what the rest of the school year will bring.
Our teachers have worked diligently to prepare students for the upcoming California Assessment of Student Performance and Progress (CAASPP)/California Science Test (CAST), and AP exams. The CAASPP is an essential test for all juniors, while the CAST is for all seniors. The CAASPP is used by the state to measure success in the areas of Math and English; the CAST measures our success in science, and both tests measure the overall success of our schools. I encourage our juniors and seniors to attend every day of testing and do their best to demonstrate college readiness. The CAASPP/CAST and AP testing schedule will be posted to our school websites once confirmed.
I encourage students to be steadfast in your studies and do your personal best as you finish this academic school year. Parents and guardians, please continue to monitor your student’s progress through Canvas, and do not hesitate to reach out to teachers, counselors, administrators, or my office if you need any support. We are committed to do all we can to help students reach their goals.
Lastly, please be aware that school will not be in session the week of March 27-31. I hope everyone has a safe and happy spring break.
Thank you!
Mathew Holton, Ed.D.
All CJUHSD students will graduate ready for college and careers.

Recent News

Summer School

View the 2023 Summer School calendar and bell schedule.

Drive for Excellence - New Car Giveaway!

This school year seniors from Ontario HS, Colony HS, Etiwanda HS, & Alta Loma HS will be eligible to participate in the Drive for Excellence New Car Giveaway.
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

District Facts

  • 60% of CJUHSD 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.

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 approximately 24,000 students, the District is the second 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, "all students in the Chaffey Joint Union High School District will graduate ready for college and careers."
To support this effort, the District provides college and career readiness endeavors that include career interest assessments and programs, access to Baldy View Regional Occupation Programs (ROP), college and career fairs and other events, and curriculum that develops employability, life, and learning skills. 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. 
School Campus at Sunset