Over at the Volokh Conspiracy, Jacob T. Levy and Tyler Cowan have written about the Center for Talented Youth from the point of view of an alumnus and a parent respectively. I taught Etymology at CTY one summer 10 or 15 years ago and enjoyed it immensely. One thing I noticed: If the students were mostly nerds and geeks, it certainly didn't show. If anything, they seemed on the average less awkward, pimply, and badly-dressed than most high schoolers, and the only grossly obese people on campus that year were a couple of math instructors.