Protect Our Kids from Preschool

Tuesday, August 26th, 2008

Protect Our Kids from Preschool, Shikha Dalmia and Lisa Snell implore:

If anything, preschool may do lasting damage to many children. A 2005 analysis by researchers at Stanford University and the University of California, Berkeley, found that kindergartners with 15 or more hours of preschool every week were less motivated and more aggressive in class. Likewise, Canada’s C.D. Howe Institute found a higher incidence of anxiety, hyperactivity and poor social skills among kids in Quebec after universal preschool.

The only preschool programs that seem to do more good than harm are very intense interventions targeted toward severely disadvantaged kids. A 1960s program in Ypsilanti, Mich., a 1970s program in Chapel Hill, N.C., and a 1980s program in Chicago, Ill., all report a net positive effect on adult crime, earnings, wealth and welfare dependence for participants. But the kids in the Michigan program had low IQs and all came from very poor families, often with parents who were drug addicts and neglectful.

Even so, the economic gains of these programs are grossly exaggerated. For instance, Prof. Heckman calculated that the Michigan program produced a 16-cent return on every dollar spent — not even remotely close to the $10 return that Mr. Obama and his fellow advocates bandy about.

(Hat tip to Arnold Kling.)

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