Students of color are suspended at disproportionately higher rates than white students and, on average, perform more poorly on standardized tests. But no peer-reviewed nationwide research has documented a link between the two disparities—until now.
A new Stanford-led study finds that an increase in either the discipline gap or the academic achievement gap between black and white students in the United States predicts a jump in the other. Similarly, as one gap narrows, so does the other.
“Prior research has suggested that achievement gaps and discipline gaps may be two sides of the same coin,” said Francis Pearman, an assistant professor at Stanford Graduate School of Education and lead author of the study. “This is the first study to document this relationship at the national level.”
The study was published Oct. 16 in AERA Open, a peer-reviewed journal of the American Educational Research Association.
Documenting a theoretical connection
Past studies have provided evidence of racial disparities in both school discipline and academic achievement, and for decades, researchers have attempted to shed light on the causes and outcomes of each of these gaps, said Pearman. “But it wasn’t until recently that people started talking about these gaps as potentially being related to one another.”
Previous research in this area, however, has never documented a link between the two gaps at a national level.
“The most influential work in this space has largely been conceptual—drawing on existing literature to make a theoretical argument for a link between the racial discipline gap and the academic achievement gap,” said Pearman. “Or it’s been local, looking at whether a relationship between the two gaps exists within a given school district.”
To study whether these theoretical arguments and local findings held nationwide, Pearman and his coauthors analyzed disciplinary and achievement data for students in third through eighth grade in school districts across the United States for the 2011-12 and 2013-14 school years.
Achievement data came from the Stanford Education Data Archive (SEDA), a massive collection of 350 million test scores from third- to eighth-grade students at every public school in the United States. (In September this data archive became more widely accessible to the public through the Educational Opportunity Project at Stanford University, an initiative directed by Stanford education professor Sean Reardon to support work to reduce educational disparities.)
Disciplinary data came from the U.S. Department of Education’s Civil Rights Data Collection, and socio-demographic information on school districts came from the Common Core of Data and the American Community Survey.
An unexpected finding
The researchers found that a 10 percentage point increase in the black-white discipline gap in a school district predicts an achievement gap that is 17 percent larger than the average black-white achievement gap.
“As the racial discipline gap goes up, so too does the racial achievement gap,” Pearman said. “Likewise, as the racial discipline gap goes down, so too does the racial achievement gap.”
An increase in the achievement gap between black and white students also predicts a larger-than-average discipline gap, the researchers found. Their study is the first to examine the relationship in both directions.
The researchers also saw a significant association between the Hispanic-white achievement and discipline gaps. But they were surprised to discover that other factors—such as local poverty and education levels—accounted for the relationship. Once they controlled for these differences at the community level, the relationship between the two gaps disappeared.
“This suggests that the mechanisms connecting the achievement gap to the discipline gap, such as teacher biases and feeling isolated at school, may be most salient for black students,” Pearman said.