I went to a middle school in the 1990s that clearly came out of the same 1970s wave of “rethinking school design.” Ours had the benefit of the what-were-we-thinking retrofit walls being proper drywall, but, perhaps in trying to dodge the climate control problems you mention, most classrooms still didn’t have doors.

I wouldn’t learn what the Lindy effect was until decades later, but looking back, it was an instructive early lesson.