In 1955, Marianapolis officially became a part of the New England Association of Secondary Schools and Colleges and in 1974 finally became co-educational due to low enrollment after the Oil Crisis of the 1970s.
Marianapolis officially became a part of the New England Association of Secondary Schools and Colleges after the Oil Crisis of the 1970s. This was in 1955. Marianapolis officially in 1974 finally became co-educational due to low enrollment after the Oil Crisis of the 1970s. This was in 1955.