Mathematica Policy Research Report
Understanding the Impact of KIPP as it Scales
Released September 2015
In 2015, Mathematica released the report from their five-year i3 Scale-Up Grant Evaluation of KIPP schools. This is the first report ever to include KIPP schools at all K-12 levels, including elementary and high schools as well as middle schools. The report also examines KIPP’s middle school impacts over the past decade.
- KIPP elementary schools have positive, statistically significant, and educationally meaningful impacts on three of four measures of reading and mathematics skills.
- Consistent with prior research, KIPP middle schools have positive, statistically significant, and educationally meaningful impacts on student achievement in math, reading, science, and social studies. Average impacts of middle schools were positive and statistically significant throughout the 10-year period covered by the study, though higher in earlier years than recent years.
- KIPP high schools have positive, statistically significant, and educationally meaningful impacts on student achievement for high school students new to the KIPP network. For students continuing to KIPP high schools from KIPP middle schools, impacts on achievement are not statistically significant. For this group of continuing KIPP students, KIPP high schools have positive impacts on a variety of college preparation activities and the likelihood of applying to college.
- On surveys of student motivation, engagement, behavior, and educational aspirations, KIPP schools showed no significant impact. However, KIPP elementary and middle schools had positive impacts on parent satisfaction.