Speaking anecdotally, yes. I attended a boarding school (during the 80s) in Southern California that had one. It was converted into a combo darkroom/yearbook staff room at some point in the 70s. The backstory was that during the 50s some overzealous parents of a particular student had it built for him. It supposedly housed 4.

What always boggled my mind was, in the event of a nuclear war, what made anyone think that little Biff stood a fighting chance in hell of getting in vs. all the other students and faculty members clamoring over each other.