Are you too cool for school? Not if you want to stay in any of these hip hotels, all of which are housed in former learning institutions. Whether in stately stone buildings or quaint, one-room, clapboard houses, these lodgings make the grade when it comes to combining contemporary design with whimsical classroom accents, ranging from in-room chalkboards to gymnasiums repurposed as chic restaurants. At these 11 hotels, you'll be glad that school's back in session.