I would imagine that any kids in a mars colony would have access to the most in depth schooling imaginable. The average educational level of the population there is going to have to be extremely high initially, and it is very hard to skip class. So if all you cared about you child's welfare was the quality of schooling, Mars wouldn't be a bad idea. Of course there are other risks and to take kids along on the first few ships would probably be considered bad parenting.