There is an old adage. It’s very hard to get into an Ivy League school, but once in, it’s even harder to flunk out. HYP, in particular, are notoriously difficult to transfer into. In fact, it’s only recently that Princeton started accepting transfer applications. Cornell, partly due to its articulation agreement with NYS, plans for a higher number of transfers. As others have said, specifics can be found via the Common Data Sets.