I once heard Edgar Friedenberg (education theorist) talk on Summerhill. I also audited, out of interest, a course he gave to education students back around 1971. He didn't have a lot of respect for them. I remember him intoning dryly "you people... could not pass... a basal metabolism test."

It was rather distressing to see some people writing it down in their notes, apparently thinking "Oh no! Another test!"