Principal's Message

Dear Ontario Students and Parents,
As we enter the fourth quarter, it’s incredible to see how far we’ve come this year! I want to take a moment to encourage all students to finish strong—you have worked hard, and we are so proud of your efforts and achievements.
After Spring Break, we will enter an important time of the year: academic testing season. This includes the administration of the Smarter Balanced Assessment Consortium (SBAC) and Advanced Placement (AP) Exams. Our students and staff have been diligently preparing, and I am confident that their hard work will pay off. These assessments are important indicators used by the state to measure our school’s overall success, and I know our Jaguars will rise to the challenge!
Stay Focused & Prepared – Testing Information
✅ 12th Grade – California Science Test (CAST)
All seniors will take this exam March 17-19.
✅ 11th Grade – California Assessment of Student Performance and Progress (CAASPP)
This computer-based exam will be taken by all 11th-grade students. With daily technology use, our students are well-prepared for success!
- Testing Schedule: Click here
- Block Bell Schedule: Click here
- English Testing: April 1-11
- Math Testing: April 15-25
✅ May 5-16 – Advanced Placement (AP) Exams
AP students will have the opportunity to earn college credit by scoring a 3, 4, or 5 on their exams.
Academic Support & Tutoring
We are here to support every student’s success! Take advantage of the resources available to help you prepare:
- After-school tutoring: Monday-Thursday, 3:30-4:30 p.m.
- Library Hours: Open Monday-Thursday, 7:15-8:15 a.m. & 3:30-4:30 p.m.
Our students have been working hard, and our teachers are committed to ensuring they are well-prepared for these exams. Stay determined, stay focused, and give it your best!
For those interested in learning more about Ontario High School’s progress, I encourage you to explore the California School Dashboard, which provides insights into areas such as graduation rates and college/career readiness.
Thank you for your continued dedication and support. Let’s finish the year strong, Jaguars!
Larry Rook
Principal, Ontario High School