Different schools, different tests
In some regions of the UK every child will sit the same test — organised by the Local Authority. Your child might be entered for this test automatically, but its good to check. In other regions, you’ll need to apply to each school individually, and your child will sit a separate test specific to each school you’ve applied to.
You’ll need to check with each school you’re going to apply to for up-to-date information on admissions. Make sure you check the application deadlines carefully for each form you need to fill in.