Medley, don't forget that - in your 'battle' to get what you want - if you win, it means some other child loses. A child who may not have the benefits of a motivated and dedicated parent as you clearly are.
rather than be so fixated on one or two schools, wouldn't it be better to be more relaxed about which school your child goes to (there are no bad primary schools round here), but help make your child's primary education a success anyway by being involved with and positive about whichever school it happens to be?