I don't have any A Levels because I did not go to school in the UK, but I can tell you that my 72/100 mark on my high school diploma is definitely not the equivalent of 3 A Levels in Maths, Physics and any other subjects. No one but maybe Ryanair has ever asked a high school certificate and I have recently obtained my first job on a medium jet and in no stage during the selection proces did they ask about my high school grades and diploma certificates.