OUR REPUBLICAN PRESIDENT:

HARDLY anyone knows it, but since its earliest days the Obama administration has been pursuing the most important initiative in the history of federal attempts to use evidence to improve social programs.

Despite decades of efforts and trillions of dollars in spending, rigorous evaluations typically find that around 75 percent of programs or practices that are intended to help people do better at school or at work have little or no effect. Studies of the early childhood education program Head Start and the substance-abuse prevention program D.A.R.E. show that even when there are benefits, they are often modest and not enduring.

As a policy analyst who helped House Republicans design the 1996 welfare overhaul and who later advised President George W. Bush on social policy, I am committed to the principle that the government should fund only social welfare programs that work. That's why it's imperative that the new Congress reject efforts by some Republicans to cut the Obama administration's evidence-based programs. Especially in a time of austerity, policy makers must know which programs work, and which don't.

A growing body of evidence shows that a few model social programs -- home visits to vulnerable families, K-12 education, pregnancy prevention, community college and employment training -- produce solid impacts that can last for many years. Here are some examples. [...]

Expansion of these programs has been possible because the Obama administration, building on work by the Bush administration, has insisted that money for evidence-based initiatives go primarily to programs with rigorous evidence of success, as measured by scientifically designed evaluation. (Continuing evaluation is necessary because programs that work in one location can fail when implemented by new organizations in different locations.) Since 2010, these principles have been the basis for competitive grants to more than 1,400 programs across the country.

Over time, an evidence-based approach should be a prerequisite for any program to get federal dollars. 

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