In Willowdale, rapid condo development has led to 17,900 new residential units. This adds an estimated 1,000 new students from JK-12. Newly approved developments could increase this number by up to 1,300 in 2017-18. In 2016, 5 of 8 schools in the Yonge-Sheppard corridor already experienced overcrowding. On average, these 5 schools operate at 127% capacity. This forced schools to implement 24 portable classrooms.