Nobody’s too cool for school at these five redesigned high-end hotels

It's never too late to go back to school—especially if you like the idea of swapping exams, dining halls and dorm rooms for spa treatments, gourmet meals and high-design digs. Around the world, schoolhouses have been refashioned into stylish hotels, some of them correspondingly themed. Given the cost of education these days, even the most upscale spots may seem like a bargain.