How about not rejecting a kid just because his father is working?
Why is that father trying to get into that school? Because they reject 95% of applicants! So both parties are Baalei Ga'avah!
There are schools that have thousands of applicants, and very little space, why shouldn't they accept who they want to?
There are many schools that are great schools, that don't have the "chasuv" name that they can get into.
As for a child from a divorced home not getting into a school - that is a true churban!