Vouchers and College Attendance: Puzzling Findings Deserve Much Caution
Several months ago I described the problems in a stud y that seemed to have great policy relevance, but little empirical support for its contentions. Sadly, examples of studies like these abound in education, and another is currently making headlines. " Vouchers Boost Blacks' College Enrollment Rates ," claim the stories-- and boy do the effects seem large! A "24 percent increase" in college attendance among black recipients of those vouchers-- what a dream. And it must be an accurate statement, right, since this was an experiment? Well, not necessarily. Too many practitioners, policymakers, and even researchers are far too inclined when they hear the words "randomized trial" to ignore the usual concerns about the reliability and validity of estimated program effects. After all, it's "gold standard," and touted by the Institute of Education Sciences as being the most valid to get a sense of how well programs work. Unfortunately, its us...