Joel Waldfogel, a business prof at the Wharton School, bases a commentary on Slate on the James Heckman/Dmitri Masterov analysis of the economic returns of preschool from high quality programs serving the disadvantaged. He says government programs are needed to make up for the weakness of many families, which makes them unable to function as caregivers and nurturers of children. He concludes:

A sales problem remains: These programs invade the traditional province of the family, and in Heckman and Masterov's conception, they would target disadvantaged populations that are disproportionately minority. Wanted: a credible and sympathetic pitchman. Paging Barack Obama

Obama, the Illinois Senator running for president, has yet to announce his position on expanding the federal role in pre-kindergarten. Hilary Clinton, the New York Senator and presidential candidate, though, supports phasing in a $10 billion federal fund to match new state investments in high quality preschool.