The Ontario Medical School Application Service’s (OMSAS) Grading System Conversion Table is used to calculate GPA with your grades from all undergraduate courses completed on a full-time basis. All grades are included in a single GPA, including grades from multiple degree programs, multiple universities and/or from full-time non-degree undergraduate study. Part-time courses* are counted towards meeting the prerequisite and degree requirements but they will not be included in the GPA calculation. Grades are not weighted differently based on your year of study.