It is definitely 'about the parents' having or acquiring an understanding of the system at any given time. We are both graduates but the situation does change over time and, being arts graduates, we have no previous experience of entry into medicine or sciences - or of Science and Maths A-levels for that matter.
Another factor, at least where DD was concerned, is the introduction of computer generated target grades. This is pernicious, in my opinion. DD was hampered by it from term 2 of Y12 because of a poor and uncharacteristic mark in a modern language aural so this translated into a B and stuck with her throughout despite the mod. lang. teachers consistently saying she was their best student. This B was the 'excuse' for not including her in the widening-access trip to Oxford and could well have stopped her applying for medicine at all if, as we feared, it became fixed as her predicted grade and if she or we had accepted it as a true assessment of her ability.
It is glitches like this that make me keep banging on about DD's experience because I really believe that she would never have made it if we had not maintained a healthy disbelief in the official line. Above all, we did our own research. The only time I had my eye off the ball was over the BMAT exam because she had asked if she had been entered for the exam and been told that she was. I should have realised that I had not been billed for a payment but did not know one had to be made. I should have checked.
DD is also of steely character and each set back makes her more determined so I think it is true to say that that man's hostility goaded her into succeeding despite him. The kindness and encouragement from other staff was also an incentive, as was their sheer brilliance and expertise.
We the parents had to steer a rather difficult course between encouraging her throughout yet trying to prepare for possible disaster. She never had a plan B.
I did not make an official complaint because I was afraid that it would make her life even harder during crucial months. I also did not want to draw unnecessary attention to the teachers who had used initiative on her behalf, one of whom made a vital confirmatory phone call 20 mins before the BMAT deadline when senior management would not do so. He has been thanked privately. I don't know what action I might have taken had things turned out differently though.