Peter Gray, the psychologist whose work is the basis for this Atlantic piece, coauthored a study of a school with non-compulsory classing in 1986: http://evol

Peter Gray, the psychologist whose work is the basis for this Atlantic piece, coauthored a study of a school with non-compulsory classing in 1986: http://evolution.binghamton.edu/evos/wpcontent/uploads/2008/11/Gray01.pdf http://evolution.binghamton.edu/evos/wpcontent/uploads/2008/... Democratic Schooling: What happens to young people who have charge of their own education? The paper compares the post-school accomplishments of two groups of students post-school.