Grade 12 Courses You Need for University in Ontario

Choosing the wrong Grade 12 courses is one of the most common and most costly mistakes students make on the road to university. The right courses open doors. The wrong ones can quietly close a program you were counting on.

This guide explains which Grade 12 courses Ontario universities actually require, how admission averages are calculated, and how to plan your final year with confidence.

First, understand the “U” and “M” codes

In Grade 12, university admission depends heavily on the type of course you take. The two that matter most are:

• U courses (University preparation), designed to meet university admission requirements
• M courses (University/College preparation), accepted by many university programs

For most university programs, you will need Grade 12 U courses. When a program lists prerequisites, it almost always means specific U level courses. Choosing the correct level is just as important as choosing the correct subject.

The one course almost everyone needs: Grade 12 English (ENG4U)

If you take only one thing from this guide, make it this. Grade 12 English, course code ENG4U, is required for admission to virtually every university program in Ontario, no matter the field.

Whether you are heading into engineering, nursing, business, or the arts, ENG4U is the single most universal admission requirement. Make sure it is on your schedule.

Grade 12 courses by university program

Different programs require different prerequisites. Here are the most common paths.

Engineering and computer science

• ENG4U (English)
• MHF4U (Advanced Functions)
• MCV4U (Calculus and Vectors)
• SCH4U (Chemistry) and SPH4U (Physics) for most engineering programs

Advanced Functions is essential here. It is the foundation for Calculus and Vectors, and most engineering programs expect both.

Life sciences, health sciences, and nursing

• ENG4U (English)
• SBI4U (Biology)
• SCH4U (Chemistry)
• MHF4U (Advanced Functions), required or recommended for many programs

Top life science programs at schools like McMaster, Queen’s, and the University of Toronto typically expect both Biology and Chemistry, so plan for both if health or medicine is your goal.

Business and commerce

• ENG4U (English)
• MHF4U (Advanced Functions) or MDM4U (Mathematics of Data Management), depending on the program

Many business programs are flexible beyond English, but competitive programs often expect a Grade 12 U math. Some, such as the more selective business schools, may ask for additional courses, so always check the specific program.

Arts, humanities, and social sciences

• ENG4U (English)
• Additional Grade 12 U courses in your area of interest

These programs usually have fewer fixed prerequisites, which gives you room to choose courses that lift your average and reflect your strengths.

How Ontario universities calculate your admission average

Here is something many students do not learn until it is too late. Most Ontario universities admit based on your Top 6 Grade 12 U or M course marks.

That means your admission average is built from your six best qualifying Grade 12 courses, including any required prerequisites for your program. Two lessons follow from this:

1. Your prerequisite courses must be part of that Top 6, so strong marks in them matter twice.
2. Choosing two or three additional courses you can genuinely excel in can meaningfully raise your average.

Planning your Grade 12 year with the Top 6 in mind is one of the smartest moves you can make.

The mistake to avoid: missing a prerequisite

Every year, students apply to a dream program only to discover they are missing a required course. Because prerequisites are non negotiable for admission, a single missing credit can delay your plans by a full year.

We wrote a whole article on this exact problem: The Hidden Roadblock: Missing Grade 12 Courses That Limit Study Abroad Opportunities. The fix is simple. Confirm the exact Grade 12 requirements for every program on your list early, ideally before you finalize your Grade 12 schedule. If you find a gap, an online school lets you add the missing credit on a flexible timeline.

How online learning helps you get the courses you need

Traditional schools cannot always offer every Grade 12 U course, or fit them into one timetable. That is where flexible online learning helps.

At Royal Ontario Academy, you can take the exact prerequisite courses your program requires, on a schedule that works for you. You can add a missing credit, improve a mark to strengthen your Top 6, or reach ahead and take Grade 12 courses early. Students finish in as little as four weeks or take up to twelve months, and teacher feedback keeps you moving forward. You can learn more about our approach in Why Choose Royal Ontario Academy?

Our most in demand courses are exactly the ones universities look for: Advanced Functions, Calculus and Vectors, Biology, Chemistry, and Grade 12 English.

What students say about us

Independent reviews on Our Kids, Canada’s trusted private school guide, describe teaching that keeps students challenged without leaving them lost.

“The teaching is pretty good at ROA. It is challenging enough so you are academically stimulated, but not so hard that you are left completely confused.”Student review, Our Kids Private School Guide

Read more student and parent reviews on our Our Kids reviews page.

Frequently asked questions

Which Grade 12 course do all university programs require?

Grade 12 English (ENG4U) is required for admission to virtually every university program in Ontario.

What math do I need for engineering?

Most engineering programs require both Advanced Functions (MHF4U) and Calculus and Vectors (MCV4U).

What is the Top 6 average?

It is the admission average most Ontario universities use, based on your six best Grade 12 U or M course marks, including required prerequisites.

Can I take Grade 12 university courses online?

Yes. You can take recognized Grade 12 U courses online and use them for university admission.

Plan your Grade 12 year the smart way

The students who get into their first choice programs are usually the ones who planned early. Confirm your prerequisites, aim for a strong Top 6, and fill any gaps before they become a problem.

Contact Royal Ontario Academy to build your Grade 12 course plan today.