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Ontario High School
24 Hour Attendance Line

(909) 460-5832

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The Common Core State Standards Overview

Our second semester is off to an excellent beginning!

Our students are getting a fresh start and have begun their semester with a lot of energy and optimism.  Our school utilizes a lot of technology in the classroom and we will continue to incorporate it as we move forward. 

Please keep in mind a few points to support students’ achievement this semester:

  • Tutoring takes place after school from 2:30-3:30 Monday-Thursday
  • Our library is open from 2:30-4:30 p.m. Monday-Thursday
  • School Loop will allow you to view students’ grades and progress in their classes
  • School Loop will also provide you an opportunity to contact teachers via email.
  • If you need assistance in any of the above, please contact our Guidance office.

It is crucial for our students to stay focused and attend school every day. We are here to support them and work with our parents and our community to help create paths that will lead to our students’ success in college and careers.

It is an honor to serve as your Principal, please do not hesitate to call if you have suggestions and ideas.


Mr. Zaldivar

Twitter @OntarioHS


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Completing Meal Application

Completing Meal Application

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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OHS News


Want to graduate in white? You WANT to apply to the California Scholarship Federation! This is California's official Honor Society and membership is available to all students grades 10-12.

See Mr. Sousley in Room 232 for an application and details. Hurry, the application period opens on Tuesday, January 16th and ends on Friday, January 26th.


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.