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Comment by bobbean | Hacker News Reader

I live in the US, I don't think my highschool had windows in any of its classrooms. They're may have been one or two that I don't remember, but the majority only had a "window" in the door that was a small rectangle, about 6 inches wide and 2 feet tall. Some didn't even have that, or the teacher had it covered with poster board.

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Our high school had many interior classrooms with no windows, and the perimeter classrooms only had one or two small ones each. It was relatively new (at the time) so was built with air conditioning in mind.

Is it specific to schools or is it common to have many rooms in buildings without windows?

Rooms designed for presentations often don’t have windows so that they can be easily darkened for projectors to work better. Where I grew up, it was quite common for classrooms to have an overhead projector [1] equipped with a long scroll of transparent film. The instructor would give their lecture sitting at the projector and writing on the film instead of at a blackboard.

[1] https://simple.wikipedia.org/wiki/Overhead_projector#/media/...

Since the other commenter didn't answer your question even remotely.. It's mostly schools that are lacking windows. Most places (that my tired brain can think of) at least have a window, not necessarily one that opens though. Might be different for other places, only speaking from personal experience.

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