I've been a huge fan of Dick Grayson since I started reading comics in 1985, and was surprised to find the cartoon Robin I knew from Superfriends was now Nightwing. I read all the New Titans/Tales back issues, most of the original run of Teen Titans, and have read several of the Hudson University and Batgirl teamup stories. One thing I don't get. Everyone says Robin "failed out of Hudson University" in Detective 495. Indeed, we see him leaving Hudson for Gotham at the end of that issue, with a make-up paper hanging over his head for his Business class, and his girlfriend Jennifer very kindly waiting back at his place with books from the library. But nowhere in that book is it any more than implied that he is heading for Gotham to stop a drug ring.
The next we see him is (I believe) Batman 329, cover dated one month following Tec 495. No mention of events in 495. Then we're at New Teen Titans 1 (just after Batman 329), where Wally West seems to know Dick has left college, but when was the reader actually told? Last we knew (a month ago) is he was failing one class and going to Gotham to stop some drug dealers.