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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 Jaguar Family!

Spring break is around the corner (March 13-17) and our students will be taking several assessments/tests in the spring.

Testing information:

  • 10th Grade Life Science- Early April
  • Late March and April California Assessment of Student Performance and Progress (CAASPP) -All 11th grade students will take this exam and will be taken on a computer. Our students use computers on a daily basis and will be well prepared!
  • 11th grade English- Late March and April
  • 11th grade Math- Late April
  • Early May- Advanced Placement (AP) tests- students taking these exams will have the opportunity earn college credit should they earn a score of 3,4, or 5 on the exam

Please remember that we have tutoring after school, Monday-Thursday and our library will be open from 2:30-4:30 p.m. Monday-Thursday.

We are proud of our students' hard work and I know that our teachers are properly preparing our students for their exams.

It is an honor to serve our students and our community!


Mr. Zaldivar


Follow us on Twitter at @OntarioHS


Drug Awareness Workshop For Parents

Drug Awareness Workshop for Parents
Presented by Jackie Long
Special Agent Supervisor, Dept. of Justice


Date: April 25, 2017
Time: 6:00PM-7:30PM
Place: Hill Auditorium

Chaffey Joint Union High School District
211 West Fifth Street, 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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Spring Tutoring Schedule

Spring Tutoring Schedule

Jaguar Parent University

The counselors at Ontario High School would like to invite our parents to a series of classes that include topics such as College and Career Readiness, A-G, A Day in the Life of a JAG Student, and much more! Please join us for all 6 classes.

1. Thursday, November 3, 2016
2. Thursday, December 1, 2016
3. Thursday, January 12, 2017
4. Thursday, February 2, 2017
5. Thursday, March 9, 2017
6. Thursday, April 6, 2017

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


Metro Honda - Perfect Attendance New Car Give Away


Get perfect attendance at Ontario High School during the 2016-17 school year and you will be eligible to win a new car from Metro Honda!


Official Rules

Go Jaguars!


Mr. Zaldivar, Principal

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Follow OHS on Twitter...

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OHS News


Submit your artwork, creative writing, photography and music to be published in the first issue of Unwired, OHS's brand new literary & arts magazine. The deadline is Monday, April 3rd. Click the link to submit!


Dream Act

School Accountability Report Card

2015-2016 - English
2014-2015 - 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.