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

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.

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

Jason Kaylor
With just a few weeks left in the school year, I want to thank our entire community for supporting our students through this unusual year. Now is the time to press hard and finish strong. We have just a few weeks of school before finals, so students must work diligently to finish the semester successfully.
Final progress reports have been mailed home, and it is imperative that all students and parents use that information to assess progress in each class. Also, continue to monitor Canvas and Parent Square to communicate with teachers and counselors if you have any concerns. This is especially crucial for senior students as graduation is right around the corner, and we want to see all our seniors at our commencement ceremony in Alta Loma’s Uhalley Stadium on Thursday, May 25th. Please see the comprehensive Commencement Guide on our website for more graduation details:
Parents can continue to help their students by reviewing their student’s progress each day and by ensuring that homework is complete. Also, please help by making sure your student is attending every class, every day. In addition, some students are taking online classes needed for graduation and/or college admissions. They must complete those by May 18th.
We encourage all students to take advantage of PAPER – a FREE online tutor 24/7. Just follow these three easy steps:

To login, students should:
1. visit
2. Select their school in the search bar.
3. Enter their school email address and password. May 22nd -25th – Finals Week
     • May 22, Monday – Regular day schedule
     • May 23, Tuesday - Periods 1 and 5 – minimum day
     • May 24, Wednesday - Periods 2 and 6 – minimum day
     • May 25, Thursday - Periods 4 and 7 – minimum day
*Students in a 0 period, see 0 period teacher for finals information. This year we will offer Summer School from: June 1-30. Registration is starting and parents should contact student’s counselor if they believe their student will need to attend.
Finally, I would like to extend my gratitude to the Alta Loma community for entrusting me with the care of Alta Loma High School this year. ALHS is an amazing school, and I am proud of all that our students, staff, parents, and community have accomplished.
Proud to be a Brave,
Jason T. Kaylor