cantoresq, and nebech look at what became of you! (Thats a joke.)
The seperation of genders works very well in the Charedi world (despite the relatively infrequent incidents.) We have far less of the problems cantoresq mentions in his high school years (and he came from a co-ed pre-high school background.)
And Chareidi marriages, coming from no mixed gender settings, work out proportionately FAR better than the secular world or even the non-secular “modern” world.