Does Head Start work?

NY Post:

Head Start, the most sacrosanct federal education program, doesn't work.

That's the finding of a sophisticated study just released by President Obama's Department of Health and Human Services.

Created in 1965, the comprehensive preschool program for 3- and 4-year olds and their parents is meant to narrow the education gap between low-income students and their middle- and upper-income peers. Forty-five years and $166 billion later, it has been proven a failure.

The bad news came in the study released this month: It found that, by the end of the first grade, children who attended Head Start are essentially indistinguishable from a control group of students who didn't.

What's so damning is that this study used the best possible method to review the program: It looked at a nationally representative sample of 5,000 children who were randomly assigned to either the Head Start ("treatment") group or to the non-Head Start ("control") group

Random assignment is the "gold standard" of medical and social-science research: It gives investigators confidence that the treatment and control groups are essentially identical in every respect except their access to Head Start.