I can't believe no one has posted a reply yet!
I thought that this was a good beginning to an interesting story.
But I do have one constructive criticism, it felt too me that too much happened in this just one chapter. I think if you went over it and fleshed out the environment, or described the general 'world' a bit then the reader (people like me) would sort of know where they stood in relating to your characters. I understand that these kids are blessed at the same time trying to lead 'normal' lives (hence the training and the classroom) but is this america, australia, planet zerop?
Let us know.