Dear Ivy League Guru: As parents we're looking for a summer camp for our 11-year-old son. He is a straight "A" student and we want him to have a good time but we also want to give him a jump start on thinking about college and choosing a career. He and his friends like science, play video games and skateboard and do other things typical of boys his age. Is it too early to encourage him to start thinking about a career? Dear Parent: While it may seem early for you to start w