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Ontario High School
24 Hour Attendance Line

(909) 460-5832

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The Common Core State Standards Overview

Hello Jaguar Family!

Spring break is around the corner and our students will be taking several assessments/tests in April and May.

Testing information:

  • 12th  Grade Science Exam- All seniors will take the exam on Tuesday, April 24 and Wednesday, April 25
  • 11th Grade- 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- Tuesday, April 10 and Wednesday, April 11
  • 11th grade Math- Tuesday, April 24 and Wednesday, April 25
  • 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 is 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.

I encourage you to explore California’s new school accountability system, the California School Dashboard which outlines our school’s progress in several areas, including graduation rate which we are rated at the highest possible mark!  Follow the link below for more information: https://www.caschooldashboard.org/#/Details/36676523634482/3/EquityReport  

It is an honor to work with you to prepare our students for the future!


Mr. Zaldivar

Twitter @OntarioHS


Promise Scholars Scholarship!

If you attended a middle school in the Ontario Montclair Unified School District, please complete the short survey at the link below. All eligible students will be awarded a $100 scholarship and will be entered with a chance to win scholarships of up to $1000. This is time sensitive, so apply today!


Eligible students will:

  • have attended an OMSD middle school
  • have graduated from any CJUHSD high school
  • have completed the FAFSA or Dream Act application
  • not be receiving a City of Ontario Promise scholarship or the Montclair to College scholarship

Reach Out - Education for Parents

Do you ever feel like you could use help with your teen? Could you benefit from a peer parent support group?


Starts Wednesday, March 14-April 25th
Every Wednesday @ Ontario High School

For more information call: (909) 981-8641
or email: dj@we-reachout.org


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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Dream Act

School Accountability Report Card

2016-2017 - English
2016-2017 - 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.