the child is often preceived as getting special attention or favored because "your mommy or daddy" is a teacher....Just another way of looking at it....
and I would bet that is the truth. I know teachers in the community whose children should be in their neighborhood school but mom thinks it's easier to have them with her so she works out a transfer. I also know that amongst their rank and file teachers know who the "good ones" are. They pull strings with the principal to get their child in the "right" room.
I would do the same but it's a perk that they get that the normal public doesn't.