First, the negative average effects of attending a charter school are driven largely, but not entirely, by students making unusually small gains during their first year in a charter. (educationnext.org)
In addition, while regulators care about average effect sizes, practitioners want to know whether a given intervention will work in their own classrooms. (educationnext.org)
Our preferred models suggest that the combined average effects on test scores of investments in both programs at 2009 funding levels are equivalent to two to four months of instruction in grade 3. (caldercenter.org)