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.
Bronco October

Bronco Bound October

Cal Poly Pomona Project CAMINOS is eager to support students interested in pursuing their college dreams.

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 Parents and Students,
We’ve missed you! Thank you for a great start to the 2021-2022 school year. Our staff and students are excited and ready to begin the year strong.
Tigers, making connections is critical to your success in high school. Get to know your teachers, join a club, try out for a sport, and take advantage of the many opportunities we have available at Chaffey High School. Students who get involved tend to be more successful in their classes, know where to go for help when they need it, and feel like school is a safe and supportive environment.
As part of our mission to ensure that ALL students graduate ready for college and career, CHS continues to offer extended learning opportunities. We have Paper tutoring services, ROAR on Saturday, support and enrichment in the 3rd Period Academy class, and credit recovery and enrichment classes during 0 and 8th period. Students and parents can also use Canvas to contact teachers and stay informed about progress in classes.
Despite the challenges that our school community has faced during the COVID-19 pandemic, we continue to strive for excellence in our programs and to provide our students with the best educational experience possible. The California Dashboard is our state’s school accountability system. Although the Dashboard was suspended last year due to the Covid-19 pandemic, it will resume for the 2021-22 school year. Please be assured that we are taking into consideration the hardships students endured this past year. The data we collect this year will help us establish a new baseline so that moving forward we know our areas of strength and our areas for growth. If you’d like, please visit the CA Dashboard.
Lastly, I look forward to meeting with parents at our Coffee with the Principal meetings. Coffee with the Principal is my opportunity to share school news and to hear your feedback. The first Coffee with the Principal will be on Wednesday, September 8, from 10am-11am in the Chaffey Memorial Library, or if you would prefer to join virtually, I will host another session on Thursday, September 9 at 6PM via Zoom.
Important: On Monday, August 16th, Chaffey High School will host its annual Back to School Night. This year’s Back to School Night program will be a completely virtual experience. At 6PM on August 16, parents and families are invited to attend a webinar hosted by me, Mrs. Martinez. I will provide a welcome message and some important information about our programs and updated health and safety procedures. Once the webinar has concluded, you may access your student's classes in Canvas to view teacher videos. I hope to see you all there!
I am looking forward to partnering with you to make this our best year ever! Follow me on Twitter @ChaffeyHSTigers for all the latest news.
Go Tigers!
Christina Martinez
Principal, Chaffey High School