For a lot of state schools (like mine for example with only 61%) don't necessarily have a low standard of eduction (albeit lower than most private schools), they just have lots of deprived kids who don't care about learning. I went to a state school and came out with 12 A*-B grades including As in Maths and English, so it's not all bad. The education is good if you actually want to learn - we got an 'outstanding' Ofsted report.