In Ohio, Fordham authorizes the state’s only KIPP school (KIPP Journey in Columbus). So we were excited to read Mathematica’s recent report KIPP Middle Schools: Impacts on Achievement and Other Outcomes. It has garnered considerable media attention and commentary—from belief to skepticism—for its finding that KIPP schools significantly improve student outcomes. A large portion of the coverage and commentary has honed in on KIPP’s positive impacts on student achievement, with less attention paid to the Other Outcomes part of the report.
The other outcomes part of the report, however, deserves its share of attention—especially, the report’s analysis of what school-based factors explain KIPP’s success. This analysis is intended to pinpoint one, perhaps multiple, reasons why KIPP charter schools work for their students.
To answer why, the researchers link individual KIPP school’s impact estimates, which vary among the schools, with a set of 14 school-based explanatory factors. Here are some of the more interesting findings:
•Length of school day: Especially long school days are associated with lower student achievement. But, the KIPP schools with especially long school days also tend to spend more time in non-core subjects, which leads to point two—