There are a lot of lacrosse programs out there for 13 years olds. More so now than ever before. You say he is a good athletic ? Then keep the stick in his hand and search for a program that fits him now. Look on this site there there are plenty of options out there. Consider location of team practices, is you son comfortable with coaches and other kids and also cost. is you son at the level of this team. Don't listen to other team parents so much, go with what you are comfortable with. Good luck to you guys