The original building served until 1928 and then demolished while the school moved to the present Collegiate Gothic structure which was completed in 1929.

[2] Parkdale Collegiate Institute is a certified International Baccalaureate World School which began in April 2007.

The current head of the department for the IB program at Parkdale Collegiate Institute is Miroslaw Bartnik.

The Senior Boys Volleyball team were the Toronto AA representatives at OFSAA for the 2014–2015 season which was held in Northern Ontario.

On October 29, 2021, a teacher at Parkdale Collegiate generated controversy after wearing blackface makeup for Halloween while teaching.