The percentage of African-American and Hispanic students enrolled in law school increased between 2010 and 2013, but those gains came almost exclusively at less prestigious law schools with lower admission standards, according to new research.

Aaron Taylor, an assistant professor at the Saint Louis University School of Law, examined application trends, Law School Admission Test (LSAT) scores and enrollment figures for minority and white students in both 2010 and 2013. He hoped to better understand how the dramatic downturn in law school applications nationwide has affected diversity.

He found that law schools at the bottom of the prestige ladder — those with the lowest median LSAT scores for incoming students — have relied disproportionately on African-American and Hispanic students to fill their classes. That shift may have served as an economic lifeline for law schools during a difficult period, but bolstered the racial stratification that already existed. Elite law schools with higher median LSAT scores actually saw a proportional decrease in African-American and Hispanic students between 2010 and 2013, Taylor found.