Alta Loma 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

Summer School

View the 2023 Summer School calendar and bell schedule.

Drive for Excellence - New Car Giveaway!

This school year seniors from Ontario HS, Colony HS, Etiwanda HS, & Alta Loma HS will be eligible to participate in the Drive for Excellence New Car Giveaway.

Upcoming Events

School Facts

  • 70% of Alta Loma High School 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 at Alta Loma 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.
  • 800 Advanced Placement exams are administered to students at Alta Loma High School annually.

Principal's Message

Mr. Kaylor
It is hard to believe that we already are starting our second semester! As we settle back into our school schedule, I remind students and parents that now is the time to plan for a successful spring 2023 semester.

I would also like to remind you that now is the time for all students to increase their time and efforts on their studies. Students should be working diligently to complete assignments, study, and prepare for tests. I urge students to work hard in the coming months and achieve to their maximum potential!

To help students with their achievement, we recommend the following:

• Students may use the Tutoring Center in our Library after school Monday through Thursday from 3:15 pm to 4 p.m.
• Use Parent Square to contact your student’s teachers if you have concerns about his or her progress.
• Take advantage of additional help teachers offer before and/or after school.
• Tuesday nights in the library for studying and tutoring – 4 pm to 8 pm.
• Use Khan Academy and to review concepts students struggle with.
I wish all of our winter athletes and performers the best of luck with the current season of games and performances. Stay strong, focused, and continue to strive for excellence in all areas of your life.
As a reminder, school is not in session on the following dates:
January 16th – MLK JR. Day
February 13th – Lincoln’s Day
February 20th – Presidents Day
Again, on behalf of the Alta Loma staff, we wish you a Happy New Year and great second semester!

Jason T. Kaylor
Principal, Alta Loma High School