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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

WeTip

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

Board Meeting

Time: 5 PM
Location: Montclair High School

School Facts

  • 69% of Montclair High School graduates meet the University of California and California State University A-G admissions requirements, making it a leader in San Bernardino County.
  • 88% of freshmen at Montclair 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.
  • 1000 Advanced Placement exams are administered to students at Montclair High School annually.

Principal's Message

Joshua Cho
Montclair Cavaliers,
 
Welcome back. I hope you had a relaxing and joyful Thanksgiving break, filled with moments of gratitude and time well spent with loved ones. As we return to school, we’re entering an important period of focus and preparation: Finals week is just around the corner!
 
Progress grades were distributed on November 19. These grades provide a helpful snapshot of where students currently stand. If you haven’t already, take some time to review them and create a plan for success as we approach the end of the semester.
 
To support students in their preparation, we encourage you to take advantage of our MAST tutoring as well as our last two CAP Saturday School sessions on December 7 and December 14. These are fantastic opportunities to get extra help, clarify challenging topics, and reinforce your learning before finals.
 
Here is the First Semester Final Exam Schedule:
 
 
Tuesday, 12/17 Wednesday, 12/18 Thursday, 12/19
Period 0 
7:20-8:23 
Period 0 
7:20-8:23 
-
Period 1 
8:30-10:30 
Period 2 
8:30-10:30 
Period 3 
8:30-10:30 
Break 
10:30-10:43 
Break 
10:30-10:43 
Break 
10:30-10:43 
Period 5 
10:50-12:50 
Period 6 
10:50-12:50 
Period 4 
10:50-12:50 
Lunch (Optional) 
12:50-1:10 
Lunch (Optional) 
12:50-1:10 
Lunch (Optional) 
12:50-1:10 
 
 
Finally, I want to wish you a wonderful Holiday season. Please enjoy the break, and we look forward to seeing your return on Monday, January 6, 2025.
 
Go, Cavs!

Joshua Cho, Principal