On January 24, 2017, the Peel District School Boards Pupil Accommodation Review (PAR), voted in favour of the school closing in June 2018. In an effort to accommodate the students, Gordon Graydon's vocational and autism spectrum disorder (ASD) programs will be relocated to Glenforest Secondary School for 2018-2019 school year. In addition, Graydon's graphic design and international business programs (GDM/IBT) will be moved to T.L. Kennedy Secondary School for the 2018-2019 school year. Construction at both T.L. Kennedy and Glenforest secondary schools will be needed to accommodate the incoming students. In December 2020 the Mississauga Continuing and Adult Education Centre moved into the former Gordon Graydon Memorial Secondary School building.