IBSO Table of Equivalent Grades

Once an IB Diploma candidate's teachers have determined his or her predicted grades, specific percentages will be selected from the appropriate ranges shown below, based on the IBSO (IB Schools of Ontario) standards. These percentage grades will then be reported to the Ontario Universities Application Centre for the OSSD credits that are considered equivalent to the applicant's IB subjects.

Catholic Central High School uses the Table of Equivalence to adjust the 30% portion reserved for final evaluations.  After the release of results and component grades, marks may be adjusted based on the level attained in the IB Class and the discretion of the subject teacher.  The 70% term work portion of the OSSD mark will be reserved for the ongoing daily work and formative assessments done during the class.