Skip to main content

Chaffey Joint Union High School District Home

Superintendent's Message

Photo of Superintendent Mat Holton
Dear Chaffey District Students, Parents, and Guardians,
 
As we approach the close of the first semester of the 2025–2026 school year, students throughout the Chaffey District are preparing for final exams, which will take place on Wednesday, Thursday, and Friday, December 17–19. These will be minimum days for all students. Please visit your school’s website for specific schedule details.
 
Students, I encourage you to stay focused and finish the semester strong before enjoying a well-earned winter break. As you study, please remember to take advantage of the many supports available to you – including tutoring opportunities and individualized help from your teachers – to ensure you feel confident and prepared for finals.
 
Parents and guardians, thank you for the ongoing partnership and encouragement you provide for your student. If you have questions or encounter any challenges, please don’t hesitate to contact your school or the District Office at (909) 988-8511 ext. 2501. We are here to help in whatever way we can as we work together to ensure your student has what they need to be successful. You may also visit the “Resources” tab on our website for information about technology assistance, mental health services, and other available supports.
 
I am grateful for the resilience and determination our students continue to demonstrate and for the unwavering support our families provide. Your efforts make a meaningful difference, and we remain committed to doing everything we can to help students thrive.
 
As always, please reach out to teachers, counselors, site administrators, or my office if you need any assistance.
 
Warmest wishes for a joyful and restful holiday season.
 
Mathew Holton, Ed.D.
Superintendent
Read More
All CJUHSD students will graduate ready for college and careers.

Recent News

Show All News

Upcoming Events

Board Meeting

Time: 5 PM – 8 PM
Location: Alternative Education Center

Board Meeting

Time: 5 PM – 8 PM
Location: Alta Loma High School
Show All 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.
Ontario High School
Montclair High School
Los Osos High School
Rancho Cucamonga High School

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. 
Read More
School Campus at Sunset