He studies the social context of schooling. Dr. Coughlan's research uses geospatial statistical methods to analyze school zoning practices, patterns of school segregation, educational outcomes, and social bonds between neighborhoods and schools. Along with his research on the social context of schooling and his related publications in academic journals, Dr. Coughlan has edited and authored four books on the history of progressive education, the social foundations of education, and the sociology of education. His research has been featured in The New York Times, The Philadelphia Inquirer, and on NPR's All Things Considered.