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The National Study of Learning Mindsets (NSLM) is the largest-ever randomized controlled trial of a growth mindset program in the United States in K-12 settings. The study combined a test for cause-and-effect (a randomized experiment) with a sample that enables claims about an entire population (a nationally representative probability sample). This unique design enabled the study team to understand which kinds of students in which kinds of schools and classrooms would benefit most from the short online program designed to foster a growth mindset. It also generated a rich longitudinal data set that can be used for many future research projects.
SCHOOLS IN THE SAMPLE
The schools that participated in the NSLM were selected using sophisticated sampling techniques so the results of the study could be generalized to the more than 12,000 regular public high schools in the U.S. 139 schools were invited to administer the program and provide student records, and 76 schools agreed to participate. 65 schools provided all requested records, including both survey data and administrative records for students. The remaining 11 schools provided only the student and teacher survey data.