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

Canvas Logo


CJUHSD has adopted Canvas as our new Learning Management System

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, Principal
Dear Students and Families,
With less than three weeks of school before first semester finals, it is important that students continue to work diligently to finish the semester successfully. Final progress reports have been mailed home, and it is important that all students and parents use that information to assess progress in each class. Also, please continue to monitor Canvas, and communicate with teachers and counselors if you have any concerns. Please contact the school at 909-988-5560 if you need assistance with creating a Canvas Observer account to monitor your student’s progress.
I encourage students to take advantage of our virtual tutoring opportunities, along with meeting with teachers during their morning and afternoon office hours to support learning. Parents, please continue to help students by reviewing their progress each day and by ensuring their daily assignments and homework are complete. Also, please help by making sure your student is attending and participating in each class, every day.
This year, we will not have a traditional final exam schedule; instead, the schedule will remain the same:
Monday, December 14th Period 2
Tuesday, December 15th
Periods 1 - 3
Wednesday, December 16th Periods 4 - 6
Thursday, December 17th Periods 1 - 3
Friday, December 18th Non-Student Day
Even though we do not have a final exams schedule during the last week of the semester (Dec. 14-17), students will still be taking exams and completing projects to demonstrate their understanding of the content and skills learned in first semester. Teachers will communicate with their students about how to prepare for the final exam/project in their class.
Finally, I would like to extend well-wishes to our entire Chaffey High School community during this holiday season.  Please enjoy the winter break, and we look forward to starting second semester through distance learning on Monday, January 4, 2021. Please stay connected by checking our school website throughout the winter season.
Go Tigers,
Christina Martinez
Principal, CHS