




Twelve studies find that overall gains in charter schools are larger than other public schools; four find charter schools’ gains higher in certain significant categories of schools; six find comparable gains; and, four find that charter schools’ overall gains lagged behind traditional schools.
Source: Charter School Achievement: What We Know, July 2005 Update
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Author Herbert Walberg, a project investigator at the Vanderbilt University Center of School Choice, Competition, and Achievement, provides a helpful overview on the effectiveness of charter schools, private schools, and voucher programs.
Date: 2007
Source: Cato Institute
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