The Ontario Secondary School Literacy Test (OSSLT) is a compulsory standardized test for secondary school students in Ontario who wish to obtain the Ontario Secondary School Diploma. For students who entered Grade 9 in 1999–2000, successful completion of the test is not a graduation requirement. However, for those students who took the field test of the OSSLT in 2000–2001, failed the test, and chose to retake the OSSLT in October 2001, successful completion of the provincial literacy graduation requirement became a diploma requirement. It is administered by the Education Quality and Accountability Office (EQAO).