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

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
Chaffey Students and Families,
I’m looking forward to the opportunity to have students back on campus soon! As you have heard from my recent communications, San Bernardino County is approaching the Red Tier for its COVID metrics, which will allow high schools to reopen for in-person hybrid instruction. In-Person Hybrid Instruction will begin on either April 13th or April 14th, depending on students’ schedules. Students will have a choice to either begin, in-person hybrid (physically attending twice per week) or remain in Distance Learning for the remainder of the 2020-2021 school year. For students who select to continue distance learning, they will remain at home but follow the Hybrid Instruction schedule (for more information, please click the Reopening Schools Update tab). 
As we enter the 4th quarter, I want to encourage ALL students to finish strong. You have worked hard during distance learning and I am proud of what you have accomplished despite the challenges you have faced. We are also approaching the academic testing season which includes the administration of the CAASPP, ELPAC, and AP Exams. We recognize the significant impact that the COVID-19 pandemic has had on student learning and simply encourage our students to do the best that they can. At this time, it is unknown how student achievement data will be reported and analyzed due to the suspension of the CA Dashboard in 2020.
Our Spring sports season is underway!  For the first time since school closed last March, several of our athletic teams are back out in the field and ready to compete. CHS Cross-Country, Football, Tennis, and Water Polo have begun practicing and have a schedule of competitions lined up! Basketball, Baseball, Softball, Soccer, Golf, Swim, Wrestling, and Track & Field are coming soon. Please explore our website for the latest news regarding Athletics. In addition, our Band is back and practicing. It’s been amazing to hear our students playing their instruments in the quad again. It has literally been music to my ears!
Tigers, I encourage you to continue to do your personal best. Whether you remain in distance learning or return in-person for hybrid instruction, strive to stay on track to meet the A-G requirements and other academic goals you set for yourself. Most importantly, make time to take care of your mental and emotional health. If you need help, please call the school so that we can connect you to the resources we have.
The Chaffey High School staff loves and misses you! Let us know how we can help.
Go Tigers!
Christina Martinez
Principal, Chaffey High School
Testing Dates:
ELPAC Testing
March 8th-12th
SBAC/CAASPP (Math and English) for all 11th grade students and CAST (Science) for all 12th grade students
Throughout the month of April (dates to follow)
AP Testing (subject exams may need to be administered in-person or virtually; for information regarding a specific exam, please contact the Achievement Office)
Administration 1: May 3–7, 10–12, 14, and 17
Administration 2: May 18–21, 24–28
Administration 3: June 1–4, 7–11