23 miles away, is that each way??? Personally I think that's nuts, but that's just my opinion. When will your child get down-time (which regardless of what some parents think they all need). he'll end up spending all day either travelling or at school and then each evening doing homework and then exhausted. That's like holding down a full-time job and they have their adult life for that ... they're children for such a short time, let them have a childhood. Education continues outside of the classroom. If it's the school you want, I suggest you consider moving otherwise find a (much) more local school. I don't think children should travel anymore than 20/30 mins to get to school.
I don't agree - the train journey is downtime. The kids love it. It is a part of their social life, they chat to their friends or they can do homework. I used to do it as a kid quite a similar distance and it really isn't a problem.