"The future development of children could not be accurately assessed at the tender age of 11. The strain upon parents and children of the competitive examination was too great. Once children were shepherded into the separate pens it was too difficult for those who developed late to transfer from one to another. Their chief interest was not, however, so much educational as social; the left-wingers claimed that to segregate the clever from the stupid was to deepen class divisions. They proposed that all children, irrespective of sex, race, creed, class (that was all right but they went on) or ability, should be lumped together."