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Ontario High School
24 Hour Attendance Line

(909) 460-5832

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Complete Summer Mailer Online!


The Chaffey Joint Union High School District is now offering the option of completing the summer mailer online for returning students. If interested, please complete and return the Online Authorization Form to Ontario High School to get your Aeries Parent Portal account.

Online Authorization Form: English, Spanish

Login to Aeries Parent Portal


Hello Jaguars!

Welcome to the 2016-17 school year.  It promises to be an exciting one! Our year will begin with the facility improvements completely finished!  For the first time in the history of our school, we will be hosting our first football game and band performance in our brand new stadium!

Our students continue to make amazing progress!  Over 55% of our most recent graduating class completed the A-G requirements (the classes required to qualify to enter a four year university).  This is a historical record for our school.  US News and World Report also recognized us as one of America’s Best High Schools!

We are proud of our students and the strong community that supports them-thank you.


Students may pick up the list of courses assigned for this school year on the following days:


Class of '20 - Freshmen    
Link Crew Orientation & Lunch Thur., July 28th (A-L) 8:00-3:00
  Fri., July 29th (M-Z) 8:00-3:00
Class of '17 - Seniors Mon., August 1st 8:00-11:00
Class of '18 - Juniors Mon., August 1st 12:00-3:00
Class of '19 - Sophomores Tues., August 2nd 8:00-12:00



Have a JAGtastic summer and it is an honor to be your Principal.  School starts on Monday, August 8, at 7:30 a.m., see you then!



Mr. Zaldivar


Follow us on Twitter at @OntarioHS


Am I Ready for the Future?

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All Ontario High School students will graduate ready for college and careers.

Week At A Glance


Apply Online for Meal Benefits

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Try a new and convenient way to apply for Free and Reduced Meal Benefits online. It's fast, easy and confidential. 


Go Jaguars!


Mr. Zaldivar, Principal

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Promise Scholars Registration

Click here to register for the Promise Scholars Scholarship.

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OHS News

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Dream Act

School Accountability Report Card

2014-2015 - English
2014-2015 - Spanish

A hard copy of our SARC Report is available in the main office.

Volunteer Opportunity

The City of Rancho Cucamonga is looking for
Volunteer Volleyball Coaches
for Youth League
(Experience is NOT required)


Volunteer Flyer
Youth Volleyball Flyer


Hey Ontario.....


The Chaffey Joint Union High School District has partnered with School Loop. School Loop is an innovative communication tool designed to keep parents, students, teachers and staff connected. With School Loop parents and students can:

  •  Check assignments online
  •  Monitor current grades
  •  Email teachers/counselors
  •  View school news/events
  •  Submit work electronically

Every Chaffey District parent and student is encouraged to register. It takes less than two minutes to sign up and all accounts are FREE! Click the 'Register Now' tab on the top left of this page.