My 13 year-old cousin hacked into his school's system. What advice would you give?
jollyjerry: If your cousin is interested in doing that kind of work, why not suggest him to volunteer with the school?  All the other responses seem to romanticize the rogue hacker.  Instead, I think he should come clean, and do his work in the public.  He could offer to audit the school's network.  For a 13 year old, this would be a great opportunity to teach him to be professional and helpful.