Medley,

Catchment areas will vary every year. You need to determine the criteria for any school you choose. Whether your child will go there will depend on may variables. Normally, siblings of existing pupils will have priority. It is possible for some small primary schools that all or most places will be taken by siblings. So, the catchement area will vary. This is unlikely to happen with large primary schools. But the vacant places are allocated to those who live the nearest.