"As space constraints became more noticeable on the Franklin campus, the college built its first academic building on the Knollcrest Campus and first held classes there in 1962. For the next 10 years, the college continued to operate at both the Knollcrest and Franklin campuses, until fully transitioning to the Knollcrest Campus in 1973. During the latter decades of the 20th century, Calvin grew to around 4,200 students. In 1991, the seminary and the college established separate boards of trustees..."
https://en.m.wikipedia.org/wiki/Calvin_University