No, though you are correct that this kind of thing is popular at small liberal arts colleges. I think the one local to me does "May term" instead. It's really a nice way to do things - I took AI one year, poly sci another, good time for a study abroad. But it's also a good way to structure the kind of focused learning the original poster queried.

"January terms" are not that uncommon. One of my kids is at a private college where they do that.

That's precisely why I asked about an undergrad at a school in VT.

Not in VT.