Why does Britain and its former colonies send children to school as young as four and five, when in eighty-eight per cent of the world the starting age is six or seven? Sue Palmer, author of best-selling Toxic Childhood , uncovers the truth: it's not because of what's best for children, but historical accident and economics. Palmer examines research ranging from neurological science to educational data, and shows that under-sevens gain most -- educationally,...