From Wemyss' Broken Britain in the NER:
...the sentimental idea that the intellectual differences between children are not real - or that they are real, but too upsetting to acknowledge - has taken hold of the popular imagination, whereas once such nonsense could only have been believed by a sociologist.
My son went to one of the comprehensives that replaced academically selective grammar schools. He is now studying law at university. Since he was likely to be correct about which of his peers would have passed and failed the eleven-plus had it still existed, I asked him if any of the likely failures had gone on to do surprisingly well under the comprehensive system.
Not one. I then asked if any of those whom he would have expected to pass the eleven-plus had gone on to do less well than he would have expected.
Several.
And then of course there is the question of the content of the education, even for those who “do well”. My son would be quick to acknowledge that he is an academic success but that he knows virtually nothing of British or European literature prior to the twentieth century. Indeed, he knows little of British or European history, even including the twentieth century. He knows nothing of the Bible, or the Christian tradition. Luckily, he is genuinely intelligent, and has a magpie-like gift for intellectual theft, seeing much of an idea from even the tiniest stolen morsel.
Read the whole thing. It's about "enforced compassion" and egalitarian ideology.