How can having hundreds of kids walk past your house each day and then see you child not get into school even though they live 5 mins away not be absurd

Not sure how Lewisham works, yet I thought they all worked the same like in Wandsworth where I now live

The schools had the admissions rights and Graveney which is in Tooting allows 30% to get in by passing an exam, then they go for siblings of children, then children in care and last it goes by distance, so unless you live nest door, you have no chance if you dont get the 98% pass in the exam, the child in then SLP live across the road from the school, so it is absurd