looking for a nice island for a family

If it is in dry season, I'd suggest Ko Jum which is fairly easy to reach from Krabi airport. I have some info in the link below.

"When I stayed in Ao Leuk, there were a couple of families with small (well behaved) children. My impression was the moms felt quite at ease"

Is Ao Leuk a good place also if my son is not well behaved? What about dads, didn´t they feel at ease?

Thank you very much, you all help me a lot.