Tag: prek

One Nation, Under-Informed

Universal PreK Advocates Cherry Pick Studies

Nation writer Rick Perlstein suffered paroxysms last week over my dismissal of the evidence for universal pre-K, which he defended as “Nobel Prize-winning research.” Perlstein is mistaken. Though James Heckman, a leading preschool advocate, is indeed a Nobel laureate, he was awarded the prize for brilliant but unrelated work on statistical methods.

Far from being “Nobel Prize-winning,” the empirical case for universal government pre-K collapses under mild scrutiny. The central claim, as voiced by President Obama in his SOTU speech, is that “every dollar we invest in high-quality early childhood education can save more than seven dollars later on.” This sweeping statement does not in fact refer to the typical  return from federal or state pre-K programs. It refers to the findings from a single intensive 1960s early childhood experiment  that served 58 children in Ypsilanti, Michigan—the High/Scope Perry preschool program. Out of the literally hundreds of preschool studies conducted in the past half-century, the Perry results are not representative and have never been reproduced on a national or even a state level. In fact, an earnest experimental effort to reproduce them for just a few hundred children at eight locations failed despite an annual investment of $32,000 per child, adjusted for inflation—far more than the President currently contemplates spending.

The president’s case for universal government pre-K singles out the unusually large positive effects of one tiny study—sometimes two or three—from scores of others that show little benefit, no benefit, or even significant harm to participating students. That sea of inferior results, moreover, is drawn in large part from …the federally-funded pre-K efforts of the past 47 years. Indeed the largest, best designed, most recent studies of federal pre-K efforts were published by the Obama administration itself: the Head Start Impact Studies. These studies find little or no net lasting benefit to federal pre-K. The Obama administration was apparently so worried about these findings that the most recent study was released on the Friday before Christmas—despite a publication date on its title page of October 2012.

What we have here, in other words, is a monumental act of cherry picking rather than an example of scientifically grounded policymaking.

Early Education Scholar Takes Universal Pre-K Advocates to School

Grover “Russ” Whitehurst of the Brookings Institution has spent decades studying early childhood education. Last month he offered a review of the evidence on the federal “Head Start” program targeted at low-income children and another on universal government Pre-K programs.

Like most people who have chosen to work in this field, he is keen to find ways of improving educational outcomes for all children, and of helping disadvantaged children to catch up with their peers. Like only a very few, this goal has not lowered his standards of evidence. If there is a convincing rebuttal to Whitehurst’s essays, I haven’t seen it. And given the evidence as it exists today, I don’t expect to see such a rebuttal anytime soon.

No, Race Doesn’t Explain Disappointing Results in “High Quality” Pre-K States

After my previous post showing the lackluster overall achievement trends in states with purportedly “high quality” universal pre-K programs, one response was that this might miss better results among minority students. Well, I’ve had a chance now to chart the results for African American kids and… they’re slightly worse. See below. Can we now, finally, stop for a moment and reflect before lavishing tens of billions of dollars we don’t have on a federal expansion of such programs?

Prez to Double Down on pre-Kindergarten Flop?

According to the latest buzz, President Obama may suggest dramatically expanding federal government preschool programs in his State of the Union address next week. That, at any rate, is the recommendation of a new report from an institute closely associated with the admnistration.

There are just two problems with this plan: 1) it’s already been tried; 2) it doesn’t work.

We now have 45 years of experience with, and two top-quality randomized studies of, the national Head Start pre-school program, and the results are disappointing. Head Start was meant to close the gap in student achievement between the children of advantaged and disadvantaged families. But, at the end of high school, the gap in achievement between the children of college graduates and those of high school dropouts has remained essentially unchanged since the program was introduced. We have even more direct evidence from two large national studies of the program commissioned by the very agency that administers it: the Department of Health and Human Services. These studies find no significant benefits to Head Start at the end of the third grade–or even at the end of the first.

So why double-down on a failed program? The most plausible (and charitable) explanation is a bad case of wishful thinking. Many people make the mistake of improperly generalizing from two or three tiny pre-school programs of earlier decades which did show some lasting benefits. Sadly the federal government’s nationwide Head Start program has not replicated those benefits despite generations of unrelenting effort. And there is no reason to imagine that it will suddenly start doing so if expanded even further.

Trying to fix failed federal preschool programs by dumping more money on them is like trying to make up per-unit losses by increasing sales volume. Sadly, that’s about the level of economic acumen demonstrated by recent administrations.