For those who applied ED I or ED II, at what point did you know it was the right thing to do?

I really wanted him to consider Geneseo, but they don’t offer a CS program, which is something my DS is seriously considering double majoring in. He’s applied to several SUNY schools that I’m concerned are too big. The smallest of which is New Paltz. We are visiting Ursinus, so hopefully that will be a hit.