Mathematica Research on KIPP Schools

In 2007, KIPP commissioned independent research firm Mathematica Policy Research to conduct a multi-year study of our schools. We wanted to find out whether we were truly fulfilling our promises to students and families, and to make that information publicly known.

Mathematica’s most recent report, released in 2015, examines KIPP’s K-12 impacts as well as our middle school impacts over time, in conjunction with our federal Investing in Innovation (i3) Scale-Up Grant. The first two reports, released in 2010 and 2013, examine the impacts of KIPP middle schools.

2015 Report | 2013 Report | 2010 Report | Related Publications

Mathematica 2015 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. View the report > 

Key Findings

  • 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.

Study Publications

Executive Summary 

Full Report

Fact Sheet

An Open Letter from Richard Barth, KIPP Foundation CEO

Related Media

"KIPP charter school students show lasting achievement gains, study finds"
Houston Chronicle, September 2015

"Study: Nation's largest charter school network has huge educational impact" 
Washington Examiner, September 2015

 
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