There are plenty of camps that could be attended, it really depends on ambition (in relation to the level of skill and work) that the said sophomore has. I have a friend who has gone to an overnight at Stanford, he came back glad he had gone, but also glad to be back. Even though it was a good experience, the ordeal was rather exhausting. There are some camps that will really work you, and others that will not. It is probably best to do some research of your own on the camps.