According to Wikipedia Dartmouth College was a male only college until 1972.

Woman did work as employees at the computer center, and bringing dates from nearby schools and colleges to the computing center was apparently a thing as students liked to show off their computer skills.

Also of note: unlike other colleges, students at Dartmouth didn't need to pay for computer time, creating both opportunity but potentially also the need to 'guard' against outsiders.

I've been working at a joke about men creating languages and parallel processing but that's a story for a different thread.