My opinion on this has changed fairly recently… although my answer is only indirectly related to your question.

Because of an experience I personally had in a college classroom (as a student) (this past spring semester) I now see merit in maintaining classrooms which are founded upon the sex-segration idea. OTHERWISE… a couples only kind of format (or at least those who are happily coupled.) In this way only will it be possible to at least BE ABLE TO experience the least possible distracitions.

When there are certain females/males in the room whom “have their eyes open” (even if they’d never act upon their thoughts) this is a SEVERE distraction to those who would pick up on this, which includes mostly every single persona in the room. This distraction is almost bound to continue (in those instances where it occurs to begin with). At the least, it did with me, and took away substantially from my college experience.