The "Knowledge Is Power Program" ("KIPP") is a nonprofit network of more than 200 public charter schools educating early childhood, elementary, middle, and high school students. The What Works Clearinghouse (WWC) identified four studies of "KIPP" that fall within the scope of the Charter Schools topic area and meet…

Five sister reports published by the Friedman Foundation over the past two years have ignored the relevant research literature in asserting that private-school voucher programs can reduce the social costs of dropping out while increasing graduation rates. The reports are state-specific, targeting five different states. But each report follows a…