Many rooms, including the old student commons, were converted into classrooms.

The rooms of the building itself was converted into classrooms.

The fourth floor gymnasium was converted into classrooms and a library.

Starting in the early 1970s much of it was slowly converted into additional classrooms and offices.

More extensions were needed and in 1958 the headmaster's house was converted into classrooms.

After the completion of the present building, the old church was converted into classrooms.

A number of the rooms were converted into classrooms and laboratories.

In 1972 the school underwent major changes when the convent was converted into classrooms and subject rooms.

Later, these properties were converted into classrooms, a small music building and the current library.

The lower ground floor contained two covered play areas built so that they could easily be converted into classrooms.