English OLC4O – Ontario Secondary School Literacy Course, Grade 12, Open ENG4U – English, Grade 12, University Preparation ENG3U – English, Grade 11, University Preparation English as a Second Language (ESL) ESLEO – English as a Second Language, Level 5, Open ESLBO – English as a Second Language, Level 2, Open ESLDO – English as a Second Language, Level 4, Open ESLCO – English as a Second Language, Level 3, Open
