The following list provides some of the most common course codes for 4U/M courses in the Ontario secondary school curriculum. The program prerequisites listed on eINFO use these course codes.
| ADA4M | Dramatic Arts |
| AMU4M | Music |
| ATC4M | Dance |
| AVI4M | Visual Arts |
| BAT4M | Principles of Financial Accounting |
| BBB4M | Introduction to International Business |
| BOH4M | Organizational Studies: Organizational Behaviour and Human Resources |
| CGO4M | Geomatics: Geotechnologies in Action |
| CGR4M | The Environment and Resource Management |
| CGU4U | World Geography: Human Patterns and Interactions |
| CGW4U | Canadian and World Issues: A Geographic Analysis |
| CHI4U | Canada: History, Identity and Culture |
| CHY4U | World History: The West and the World |
| CIA4U | Analysing Current Economic Issues |
| CLN4U | Canadian and International Law |
| CPW4U | Canadian and World Politics |
| ENG4U | English |
| ETS4U | Studies in Literature |
| EWC4U | The Writer’s Craft |
| FEF4U | Extended French |
| FIF4U | French Immersion |
| FSF4U | Core French |
| HFA4M | Food and Nutrition Sciences |
| HHG4M | Issues in Human Growth and Development |
| HHS4M | Individuals and Families in a Diverse Society |
| HSB4M | Challenge and Change in Society |
| HZT4U | Philosophy: Questions and Theories |
| ICE4M | Computer Engineering |
| ICS4M | Computer and Information Science |
| IDC4U | Interdisciplinary Studies |
| LVV4U | Classical Civilization |
| MCV4U | Calculus and Vectors |
| MDM4U | Mathematics of Data Management |
| MHF4U | Advanced Functions |
| NDG4M | Aboriginal Governance: Emerging Directions |
| NDW4M | Indigenous Peoples: Issues in Global Context |
| PSE4U | Exercise Science |
| SBI4U | Biology |
| SCH4U | Chemistry |
| SES4U | Earth and Space Science |
| SNC4M | Science |
| SPH4U | Physics |
| TDJ4M | Technological Design |
| TGJ4M | Communications Technology |