Another funny thing ... WSLS was just talking aboout this and they say whether the shooter was male or female, faculty, student, or someone else is even known for sure.
There had to be dozens of witness survivors, and other witnesses to the events here. No ID yet would clearly suggest the shooter was not known to the campus or the victims. Otherwise it would seem his ID would have been leaked/reported.
I've heard initial reports he was wearing body armor, and possibly some kind of hat. His identity could have been somewhat obscured, so who knows. Shooter had no ID on him according to current news conference. (Not surprising)