Table S1.

Demographics of participating schools (experiment 3)

SchoolDistrictNumber of student participantsTotal school enrollmentMath faculty recruited, %Students on free or reduced-price lunch, %Students at or above math proficiency, %Racial composition of school, %
AsianBlackLatinoWhiteOther
1A56167210070311537534
2B55979010068312536192
3C17559850614911461186
4C21279367376316141339
5A17517410062341027747
  • Number of student participants is the number of students taught by a math teacher randomized to a treatment or control condition for whom prior- and current-year school suspension data were available. Total school enrollment is based on the National Center for Education Statistics (NCES) Common Core of Data (CCD) survey for the first day of the 2012–2013 school year. This number can be lower than the number of student participants, as students can transfer into the school over the course of the year. We received school-record data for 2,069 students, 1,682 of whom were taught by a randomized math teacher and had intervention-year and prior-year suspension records. Percent students on free/reduced lunch and racial composition are also based on the NCES CCD survey for the first day of the 2012–2013 school year. Percent students at or above math proficiency is based on students’ Standardized Testing and Reporting (STAR) Program scores through the California Department of Education Analysis, Measurement, & Accountability Reporting Division’s school reports for 2012–2013.