Hey ummmm, i would definately send him to school with the cousin, i was bullied at school and one day i cracked and beat them up when i saw each of them alone, there were around 14 girls, attacked me after school, i beat about 5 of them, the key ones that lead the gang, they never touched me again and respected me for standing up for myself, but i knw thats not the way to deal with it and this was about 15 years ago, and alot has been done about bullying since then, but send him boxing and self defence and let the cousin take him school for a week or so, so they know they are being watched. good luck ummmm......