I teach math's GCSE and A level. It is more difficult than many people realise. Students walk out of class because they can; fail to turn up because they can; sit on their phone and even swearing, shouting abuse at teachers because they can. When I say 'because they can' I really mean because we can do nothing to stop them. I am not allowed to remove them from the classroom; if they do not turn up, it's my fault; if they turn up but leave early, it's my fault; hell, if they swear at me, it's my fault. I once accidentally touched the back of one girl's head with my elbow and she screamed 'pervert' at me and reported me! Nothing came of it but that's not the point! Parents have relinquished disciplinary responsibility but in many cases it's because they are no longer allowed to discipline either. Education should start at home and basic number theory is a given. I once had a student whom when asked 'what is eleven subtract three', reached for her calculator! And don't get me started on the 'look how many holidays we get!' I teach in a college now and I get none of the normal half term and long summer break as holiday. I book holiday time during non term time seven weeks a year but start at 7:30 in the morning and am often preparing or marking till midnight. I m a qualified teacher so earn a reasonable salary but it isn't the 'walk in the park' many think it is.