yes, they did, but I think it's unlikely that a "slippery slope" effect will ever lead to enforced unisex rooms.
And, Wolfe aside, most kids I know deal with co-ed bathrooms and floors with maturity and discretion--I really think we don't give them enough credit!
But then, I adore college kids; I work with them, I teach them, I've owned a couple of my own

, and I think that overall, they're pretty great. so I guess I really have high expectations for them.