Lorraine Curry

"Dr. Raymond and Dorothy Moore, in their book, The Successful Homeschool
Family Handboook, report on a well-funded study done many years ago which
gives a gold star to unschooling. 'The children who were not formally taught
at all had the highest scores in all areas measured.'"

quoted from EasyHomeschooling Techniques
http://www.easyhomeschooling.net