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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http://www.educationnext.org/20054/60.html
This latest Bifulco and Ladd study finds that students entering North Carolina charter schools in grades 4-8 made smaller achievement gains than they would have had they remained in traditional public schools. The study also finds that this negative impact is attributable to the first year primarily. Students who remained in charters for more than one year kept pace with students in traditional schools. The negative effects of attending a charter school were considerably greater for students in newly opened charter schools than for students in charter schools that are more established. The authors state that it is important to note that the negative findings apply only to students who either entered a charter school after grade 4 or exited a charter school before grade 8. They suggest that high student turnover rates in grades 4-8 may account for some of the difference between test-score gains.
Date: 2005
Source: Hoover Institution, Stanford University
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