Your Final Step to
Post-secondary
Complete required credits, upgrade marks, and meet university prerequisites with flexible online learning.
Ministry-Inspected | Ontario Curriculum | Start Anytime
Meet University Entrance Requirements With Confidence
Grade 12 is where your university or college pathway becomes real.
Whether you need to:
Complete a required Grade 12 course
Upgrade your final mark
Improve your admission average
Meet a specific program prerequisite
How Grade 12 works at OES
A Simple Path to Earning Your Final Credits
Step 1
Register for your course
Step 2
Access lessons immediately
Step 3
Submit assignments with teacher feedback
Step 4
Complete your final evaluation online
Write your proctored online exam from anywhere.
Step 5
Receive official Ontario credit
Credits are recorded on your Ontario Student Transcript (OST).
How your final mark in calculated
OES tracks attendance through your weekly online activity, and participation is assessed through reflections. Final exams are proctored online through OES at no extra cost.
Grades 11 & 12
How the final mark is calculated from September 2026
65%
Coursework
25%
Final eval.
10%
Attend.
65% Coursework
25% Mandatory final evaluation
10% Attendance & participation
Most popular grade 12 university prerequisites
These courses are commonly required for university programs. All courses are self-paced and available year-round.
Proven Results for
Grade 12 Students
98%
of our students
find OES teachers to be responsive and supportive
10,000+
students
served since 2017
85%
of our students
earn honour roll marks
In 2026 Our Students Have Been Accepted By
Hear From Our Students
Thousands of students have successfully earned credits through OES.
Alumni Review from Alina Chowdhury
Watch an alum review by Alina Chowdhury, a former Ontario eSecondary School (OES) student. Alina appreciated the self-paced, flexible learning environment that OES provided
Alumni Review from Bilal Bacchus
Watch Bilal Bacchus, an alum of Ontario eSecondary School, share his experience. He appreciated the regular teacher check-ins and quick response times, which differed from his previous school.
Alumni Review from Mignon Conradie
Watch Mignon Conradie, an alum of Ontario eSecondary School, share her experiences and insights about the school.
What Our Students Say
Real Students, Real Results: see how students earned Ontario Secondary School Diploma (OSSD) credits online with OES, our Ontario Ministry-inspected online high school.
Why Lyna chose OES: Finished Grade 12
“I’m currently studying Nutritional Sciences at McGill University, and OES played a huge role in helping me get here.
As the first person in my family to complete Grade 12 online instead of attending CEGEP, OES gave me the flexibility, support, and academic foundation I needed to succeed. My experience was incredibly positive, and I’m grateful for how well OES prepared me for university.”
Why Lucas chose OES: Finished Grade 12
“Completing my OSSD online was extremely stress-relieving in comparison to a traditional classroom.
Not only was I capable of creating my own schedule to learn and complete work at my own pace, I was also within the comfort of my own home the entire time I was doing it. Having an individualized pace meant that I could schedule my tests at any day or time I wanted to, I could finish required work at any time I wanted to, and I could set my own deadlines for projects. All the while, I had the flexibility of fitting that progress into a schedule that worked around my part-time job and social life.”
Why Dan chose OES: Program prerequisite
“My OES credits allowed me to achieve my main goal of being accepted at a BScN program!
Without it I believe that there would be no chance. The staff are great with support and will help you any chance they get! Thank you OES high school!””
Why Gianne chose OES: Fit my schedule
“Taking MHF4U through OES helped me become much more confident in maths, especially as it was a subject I had previously found challenging.
Balancing the course alongside my A Levels taught me to manage my time, stay consistent with independent work, and take greater responsibility for my learning. I’m now finishing my A Levels while working on research and publishing papers, and the confidence and independence I gained through OES have continued to help me take on challenges beyond the classroom.”
Why Martial chose OES: Fit my schedule
“I’m now studying Finance at John Molson at Concordia, and getting here took a lot of work.
OES let me study on my own time while I was also building my own business, and that’s what made it possible. It taught me to stay disciplined and keep going on my own, and I still use that every day at university. I’m thankful to everyone at OES who helped me get here.”
Why Lily chose OES: Program prerequisite
“These credits gave me the ability to attend my dream university.
At OES I took grade 11 functions as a prerequisite for MHF4U! I am now in my first year at Western University studying psychology.”
Why Heera chose OES: Got ahead
“OES made it possible for me to complete SBI3U in a short time, entirely at my own pace—something I truly valued as a student studying remotely.
I’m grateful to my teacher and the OES team for their support, and I’m excited to continue my journey with SBI4U!”
Why Zoe chose OES: Finished Grade 12
“My OES credits have brought me closer to getting my highschool diploma.
Once I get my high school diploma, I’ll be able to get my one year certificate from a Bible college and transfer the credits towards higher education. I’ve already finished OLC4O – one step closer to meeting my goals in life!”
Why Maylie chose OES: Fit my schedule
“Ontario eSecondary School has allowed me to attend Concordia University in Finance.
I loved my experience studying online as I was able to make my own schedule while completing the required credits to attend higher education!”
Why Haajar chose OES: Fit my schedule
“My experience with OES has given me the flexibility to learn at my own pace while still challenging myself and working toward my future goals.
I’ve especially appreciated being able to explore different subjects and build skills that I know I’ll use later on. In the future, I hope my OES education will help me get into a great university and pursue a career in architecture and design. I want to eventually become an architect, design beautiful homes and spaces, and hopefully use what I learn to build something of my own. OES is helping me take the steps toward that future, and I’m excited to see where it leads me!”
Why Marek chose OES: Fit my schedule
“I really enjoy this class because, as a high-level athlete, balancing training and school can be difficult.
However, this online high school gives me the flexibility I need to reach my goals and get a good education at the same time. Taking this course has really helped me improve my time management skills and to become more independent.”
Why Stockton chose OES: Stayed on track
“My OES credit helped me get started in carpentry and gave me a chance to explore the trade.
It helped me build skills and confidence while working toward a future career in carpentry.”
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Students received a gift certificate for sharing their experience; quotes used with permission.
Not sure which course you need?
Our guidance counsellors can help you:
- Choose the right courses
- Understand graduation requirements
- Plan your university pathway
- Upgrade your admission average
Still Have Questions?
Supported by Ontario Certified Teachers
Ontario university admission averages are calculated from six Grade 12 U or M courses, always including ENG4U, plus the specific prerequisites the program requires — commonly MCV4U and SCH4U for engineering, SBI4U and SCH4U for life sciences, MHF4U or MDM4U for business. Requirements differ meaningfully between universities, so check each program on OUAC before finalising course selection.
More than in any other year. From 2026–27, Grade 12 English, math and science marks carry a mandatory written final exam worth 25%, with 65% coursework and 10% attendance and participation — and these are the exact courses (ENG4U, MHF4U, MCV4U, SCH4U, SBI4U) that build the top-six admission average. One exam now moves an admission average in a way it didn’t under the old model. OES courses have always ended in a proctored final, and Fast Track grading exists for students whose results need to land before a deadline.
Yes. A course completed within the past 12 months with at least 50% can be retaken as a repeat: one credit is earned, both attempts show on the Ontario Student Transcript with an “R” beside the lower mark, and Ontario universities generally calculate with the higher grade. Timing is the strategic part — work backwards from the application cycle so the upgraded mark exists when offers are decided. A small number of competitive programs publish their own repeat policies, so check the target program first.
With no fixed end date, a motivated student can complete a course in roughly four weeks, and Fast Track brings summative grading to 1–2 business days with 24-hour teacher responses. Students regularly use this to clear a conditional offer or add a mark before OUAC deadlines. Talk to admissions about the specific date before enrolling so the timeline is realistic from day one.
Three checks: 40 hours of community involvement, the literacy requirement (OSSLT, or the OLC4O course if the test wasn’t passed or sat), and at least two online learning credits for students who started Grade 9 in 2020–21 or later. Grade 12 is the year to close any of these still open — none can be finished after the last course if the diploma is needed for a fall admission.
Conditional offers are typically made on Grade 11 finals and Grade 12 midterm marks, then confirmed against final marks. OES sends an official midterm report card at the halfway point of every course and a final report card at completion, to the student and the home school — so a course taken here feeds the application cycle the same way a day-school course does. Sequence courses so midterms exist when universities are reading files.
Yes — taking an additional Grade 12 U or M course is the standard way to displace a weak mark from the top six, and it avoids any repeat-course considerations entirely because it’s a brand-new credit. Students often add MDM4U, a social science, or a business course alongside their day-school load. Each OES course runs on its own 12-month clock, so it layers onto a full timetable without conflict.