From Carolina Journal Radio Program No. 798: Advocates of North Carolina’s Opportunity Scholarship school voucher program recently touted results of a study from N.C. State University. It documented the vouchers’ “positive, large, and statistically significant” benefits for low-income students. Two of the key NCSU researchers, assistant professor Anna Egalite and professor Stephen Porter, discuss their findings. They explain why the Opportunity Scholarship program’s design limits researchers’ ability to perform the highest-quality performance review.