We used the Stanford education data archive (SEDA) data to examine the heterogeneity among urban school districts in the United States. The SEDA 2.1 includes data sets on students' mathematics (Math) and English language arts (ELA) achievement from 2008 to 2014 at the district level. Growth mixture modeling was used to uncover the underlying…

There are racial/ethnic disparities associated with school punishment practices and academic progress. In addition, research suggests that urban schools have stricter school punishment practices and higher grade retention rates. What remains unknown, however, is the relationship between race/ethnicity, school punishment practices, and retention…