Study
The quasi-experimental study by Leos-Urbel and Sanchez (2015) focused on elementary schools that participated in Playworks Coach in the San Francisco Unified School District (SFUSD) and the Oakland Unified School District (OUSD) from 2010 to 2013. For a school to be eligible for Playworks Coach, at least 50 percent of enrolled students must qualify for the federal free or reduced price lunch program (FRPL). The primary outcome of interest was the effect of the Playworks Coach program on absenteeism.
Researchers used longitudinal student-level attendance and demographic data from both SFUSD and OUSD for the 2009–2010 and 2012–2013 academic years matched to school-level data, which indicated whether a school participated in Playworks Coach in a given year. Data for number of school days attended and enrolled was used to calculate the individual student attendance rate (number of days attended divided by number of days enrolled).
Playworks Coach schools were divided into three groups: 1) Pre-Playworks Coach, if the school had not yet participated but would do so in a future year; 2) Playworks Coach, if the school was participating that year; and 3) Post-Playworks Coach, if the school was not participating that year but had participated in a prior year. Other schools, coded as Never Playworks, had never participated in the program. Approximately two thirds of all low-income schools in the SFUSD and the OUSD during the analysis period had participated in Playworks at some point in the past 10 years. Among the 55 schools that participated in Playworks Coach during the 4-year analysis period, the average length of participation was 2.5 years. Nineteen schools (35 percent) participated for all 4 years, and 16 (29 percent) participated for only 1 year.
To construct an appropriate comparison group, the research team used data from schools that were not currently participating in Playworks Coach but had previously participated. Using this design, the research team conducted multivariate regression analyses to estimate the relationship between Playworks Coach and student attendance, while controlling for differences between students in schools that participated in Playworks Coach that year (i.e., the treatment group) and the comparison group of students who did not participate. The treatment group (n = 28,919) included data from 47 schools, and 92.2 percent qualified for FRPL participation. Of this group, 50.1 percent were male, 49.1 percent were female, 47.1 percent were Hispanic, 25.8 percent were Asian or Pacific Islander, 15.8 percent were Black, 6.2 percent were white, and 5.1 percent identified as other. The comparison group (n = 20,289) included data from 53 schools, and 82.3 percent qualified for FRPL participation. Of this group, 52.9 percent were male, 47.1 were percent were female, 30.4 percent were Hispanic, 27.9 were Black, 25.7 percent were Asian or Pacific Islander, 11.8 percent were white, and 4.3 identified as other. The study authors conducted subgroup analyses.