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Ontario High School
24 Hour Attendance Line

(909) 460-5832

2017-18 Open Enrollment

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The Common Core State Standards Overview

Hello Jaguars!

Welcome to the 2017-18 school year.  It promises to be an exciting one! Our year will begin with a newly painted school and of course our incredible facilities that will be ready for the school year. 

Our students continue to achieve! Our graduation rate is over 91%, a record high for us!  Over 54% of our most recent graduating class completed the A-G requirements (the classes required to qualify to enter a four year university).   US News and World Report also recognized us as one of America’s Best High Schools for the 3rd consecutive year!

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

Seniors Thurs., July 27th 8:00am-11:00am
Juniors Thurs., July 27th 12:00pm-3:00pm
Sophomores Friday, July 28th 8:00am-12:00pm
Freshmen (A-L) Mon., July 31st 8:00am-11:00am
Freshmen (M-Z) Mon., July 31st 12:00pm-3:00pm

I hope you are having a great summer!  School starts on Monday, August 7, at 7:30 a.m., see you then! We are proud of our students and the strong community that supports them-thank you.

It is a privilege to work with our students!


Mr. Zaldivar



Follow us on Twitter at @OntarioHS


Completing Meal Application

Suicide Prevention Presentation

Suicide Prevention Presentation
September 7, 2017
6:00 P.M. - 7:00 P.M.
CJUHSD Hill Auditorium
211 W. Fifth St., Ontario, CA 91762


English Flyer
Spanish Flyer

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

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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. 


Jaguars, Ontario High School is excited to provide the extended learning opportunities listed below. Please attend the free tutoring sessions and the Saturday RISE sessions in order to increase your achievement and maximize your academic potential. Go Jags!

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


Go Jaguars!


Mr. Zaldivar, Principal

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Dream Act

School Accountability Report Card

2015-2016 - English
2015-2016 - Spanish

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

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.