I'll try one more time for the chronically hard of thinking.
There are 5 schools in the area. Anyone can apply for any of them (none of them are nasty poisonous exclusive grammar schools).
If each has 200 spaces and fewer than 200 children apply to each everyone gets a space.
Simple so far yes? No-one excluded, no-one prevented, no one standing on the gates saying you cant come in.
School a is a faith school. Fewer than 200 children have applied to each, everyone gets a space.
Next year rolls round. same schools. However this time school b has 250 applicants so they have to work down the oversubscription criteria and 50 kids don't get their first choice place. OH no have they been excluded, prevented or discriminated against?
Year after rolls round. This time school a, the faith school, has 250 applicants and 50 kids don't get their first choice. have they been excluded, prevented or discriminated against?
The admissions code specifically prevents any form of discrimination. Read it.
I know, the hard of thinking are never going to get it.....