We weren't quite as experimental, but my high school was built around an "open" plan where there were no walls between classrooms (except the noisy or smelly classes like wood shop or chemistry.) Classes would have a designated space to bunch their desks around the teacher's desk and a free-standing chalkboard. The system was supposed to allow students to overhear lectures from neighboring classes and teachers to team up or answer questions for each other.

It was a fairly miserable failure. Unless your teacher was really loud it was too hard to hear lectures. It was too hard to concentrate during tests and too easy for one disruptive class to ruin six other classes. (On a minor note, most teachers really hated only having one chalkboard instead of a whole wall.) By the time I got there (twenty years after the school opened), there were temporary walls everywhere and the school had mostly switched back to a traditional layout.