The beds are EXTRAAAAAAAAA-LONNNGGGGGGGG! But to give you some more context, my friend Kenny is 6’2” and apparently he has to sleep diagonally because the beds are too short for him.
But anyway, for shopping you would have to buy Twin Extra-Long Sheets. You can get them pretty much anywhere. But If I were you I’d get them before coming to school. The sheets at the Wal-Mart in Bennington get snatched up the first couple days of Fall Term.
And for a little more guidance let me introduce you to the mecca of dorm room shopping.