Summer School Overview | Online High School

Upgrade Your Marks in 4 Weeks

With Our Ministry Accredited Courses. Its Never Too Late to Enroll.

Make This Summer Count!

Complete prerequisites and meet deadlines for post-secondary admission.
Repeat a course to improve a final grade.
Fast track high school education.
Resolve timetable conflicts with a main school.
Reach Ahead from elementary school to high school.
Study while travelling or living overseas.
Earn the OSSD from anywhere in the world.

Book a Guidance Appointment

of our students

find OES teachers to be responsive and supportive

students

have successfully earned credits with us

of students

achieve a course average of 85% or higher

Ready, Set, Learn. Get Started Today!

Why Take a Summer School Course with OES?

Summer is the perfect time to secure the marks you need for your top-choice college or university. OES provides Ministry-inspected, 100% online summer courses designed for efficiency and results.

4-Week Upgrades

Need a higher mark in English, Math, or Science? Our upgrade format is optimized for students who have seen the material before, allowing for a faster pace. We have listed our most popular upgrade courses under the courses tab at the top of the page. You can learn more about eligibility for these courses here.

Guaranteed Flexibility

No fixed start dates. Start today and work through the material at the speed that suits your goals.

Seamless Reporting

We send your updated marks directly to OUAC, OCAS, and your home school so you’re ready for the fall.

Reach Ahead

Grade 8 students, or students who have recently completed Grade 8, sometimes choose to earn OSSD credits with OES before they begin secondary school. Be sure to review the reach ahead program eligibility and consultation requirements before registering.

Useful Articles for Your High School Journey

31 Jul

Mandatory E-Learning & Ontario High School

Every Ontario high school student now has to earn 2 online credits before graduation, and most students

by OES

28 Jul

New Requirements for High School Exams in Ontario: Preparing After Years Off

A whole cohort of Ontario students completed grades 9 and 10 without ever sitting a formal exam,

by oes-blog

20 Jul

Ontario High School Exams 2026: New Rules Explained

Starting with the 2026-2027 school year, Ontario secondary students will see the return of mandatory written final

by oes-blog

Read what our students have to say

It was awesome, completing high school courses with Ontario eSecondary School. My courses teachers Brittany and Andrew, both were incredible throughout and always there to help me out when i needed. I strongly suggest getting enrolled with them to get high school credentials done without waiting so long on your own pace.

pratibha malik
1/18/2025

Studying at Ontario eSecondary School was great for me! All of my teachers and staff were so helpful and kind. Thanks to Ontario eSecondary School, I was able to complete my high school diploma in a way that worked perfectly for me!

Stephanie Spinn
1/11/2025

Great learning experience and good instructor. I have learned a lot and would recommend to anyone who want to study Canadian high school English.

Ellen Boatemaa
11/25/2024

trust me, it's worth it.

alice zane
10/25/2024
Highly Recommend OES High School! I had an incredible experience with OES High School and highly recommend their online schooling program. The professors are not only knowledgeable but also kind and supportive, making learning a truly positive experience. I had the privilege of learning from Mrs. Chandroo, an excellent teacher who went above and beyond to ensure I understood the material and felt confident in my work. Throughout my time with OES, I gained a lot of valuable knowledge and skills. The flexibility and quality of the education provided have made it an outstanding choice for online learning!

Ayaz Shahid
10/25/2024

I recently completed 5 courses with OES, and I couldn't be more pleased with the experience. The teachers were incredibly supportive throughout my studies, always available to help and guide me. A special shoutout to Mara and the admin team—they went above and beyond by processing my final transcript in just one day due to an urgent need. I’m very thankful for their prompt and efficient service. Highly recommend OES for anyone looking for a flexible and supportive learning environment!

Parnavi Sarvaiya
9/25/2024

I am done this course perfectly and I did hard work to get higher marks for this course. Now I am a successful student. I am so happy for having this course. I made my own individual plane to done this course within a month. My instructor was so helpful me to go forward for my success. Finally, I reached my goal.

Kaushalya Satharasinghe
9/25/2024

My experience with OES went really well to say the least. When I had two credits I had to get, that were waitlisted at almost every school board by me, I was able to get it through them, and they were able to accommodate a very short deadline for me! Their staff are also amazing and respond very quickly, and the platform is very easy to use and straight forward. Would recommend for sure

Emmanuel Gadalla
9/25/2024
My experience with OES was amazing from the very beginning. I was able to finish an entire upgrade course in less than 2 weeks time thanks to Mara and Mr. Reel. Both staff members were very accommodating to my situation. Mr. Reel was an amazing teacher ensuring I got all the help I needed to finish my course on time. He was very patient and kind. Definitely recommend to anyone looking to finish a private school course!

lavina Yoganathan
9/25/2024

Awesome teachers and staff. They helped my son get the extra credit he needs to get in to University.

Andrew Vicencio
8/25/2024

Ontario eSecondary School provided an outstanding educational experience with excellent support and resources. They care highly about the success of their students. Highly recommend for any student currently in secondary school!

Tyler Douglas
8/25/2024

great experience quick response time !

Ali
8/25/2024
Teacher was very helpful through out the whole course, I would recommend taking courses from OES

Mike
8/25/2024

How many fee required for 12th class from Pakistan to Canada

Sana Ullah
8/25/2024

All my teachers were absolutely wonderful, they were accommodating and genuinely care about their students. Thank you OES!

noee spiegel
8/25/2024

If you are in rush and you need to finish the course in a certain time don’t go with them. My daughter regretted end of May/April. She had school work and exams so she started to study end of June and we made it clear we have to finish both Civic and Career by end of August. Their website IS NOT very easy to maneuver and user friendly and keep in mind my daughter average is 89% so she’s a good student and tried so hard to figure it out. Messaged the teacher yesterday to confirm she’s ready to go over the materials so she can start. No respond until now which is 24hirus later. That’s juts to even for someone explain how the system work. I got my money back thankfully and redshirted with another company which is so much better and great quality and speedy service. I’m not sure where they got their high start review from but I had a horrible experience with their website and teacher. Good luck

Tania Markusson
7/25/2024