No, he's referring to the Harvard and Yale units among others which are no longer with us due to their campuses being corrupted by too many stinking hippies.That's an interesting point. Whats the retention of ROTC and OCS? My class was roughly 1200 starting, 1000 graduated so 80% retention. So we arent a sure thing... but a good rate.
That said, my class in ROTC started out with I believe 30-40 something and graduated less than 20. But it's far easier to get out of ROTC; you're still in college if you do unlike USNA. You can also do the college program thing and pick up a scholarship later on. So the program is designed for that, I suppose.