Jim Knight has been much vilified for suggesting classes of 70. Mostly, he has been vilified by the NUT. A teachers’ union has, of course, a perfectly legitimate vested interest in a system which requires the employment of as many teachers as possible.
But time was when such huge numbers were not only controlled, but also very successfully educated, by teachers who had never heard of “child-centred learning”. We need to return to learning-centred children. And if there happened to be 70 of them in a class, then so be it.