I'm trying to get a sense of how clever a child needs to be to get into a selective state secondary school. Assume for the sake of argument, a fairly popular one with many applicants. Are we talking the sort of child who would get three grade 5s at key stage 2 without any extra coaching? Or with a small amount of coaching? Or a child with a particular kind of mind? I know that's a bit vague but I hope it makes sense.