New update：Due to COVID-19, this year the Ministry of Education stated that those in grade 12 do not need to pass their OSSLT to graduate this year. Students do not need to take OLC4O course either.
Course Title: Ontario Secondary School Literacy Course, Grade 12, University Preparation (OLC4O)
Course Name: Ontario Secondary School Literacy Course
Course Code: OLC4O
Grade: 12
Course Type: Open
Prerequisite: Students who have been eligible to write the OSSLT at least twice and who have been unsuccessful at least once are eligible to take the course. (Students who have already met the literacy requirement for graduation may be eligible to take the course under special circumstances, at the discretion of the principal.)