Anon, of all the people I know, none went OTD from attending college. Some went OTD during college, but their rebellion started earlier. They used college as a breeding ground for their escapades, but not as a reason. I’m not sure if I’m explaining that well. In fact, I would say MO gives an easier transition to college than Yeshivish people because they are more likely to be exposed to certain concepts at a younger age.
I have one friend who is on the very fringe of going OTD. It had nothing to do with going to a liberal college, but more to do with falling for a guy who wasn’t religious. Right now they compromise – meaning, they each do their own thing with religion. Basically, IMHO, she is slowly gone…
That being said – most of my friends did go to YU/Stern. And as far as I am aware, they did NOT encounter kefira there. Most of my other friends did go to secular but very Jewish colleges (like Brooklyn).