The percentage of underrepresented minority students increased in some cases after universities stopped requiring applicants to submit standardized test scores, according to a study published Monday in the American Sociological Review. 

The findings come in the aftermath of the COVID-19 pandemic, which prompted many colleges and universities to rethink their testing policies; some went test-optional or test-blind while others doubled down. But starting long before the pandemic, critics have argued that consideration of standardized test scores often advantages white and wealthier applicants. 

The study examined admissions patterns at 1,528 colleges between 2003 and 2019. During the 16-year time frame, 217 of those colleges (14.2 percent) eliminated standardized testing requirements. But researchers found that simply eliminating testing requirements didn’t guarantee a more diverse student body.  

The institutions that eliminated the requirements but still gave significant weight to test scores during the application process didn’t increase their enrollment of underrepresented students in the three years after the change. However, colleges that reduced the weight of test scores showed a 2 percent increase in underrepresented student enrollment. 

Additionally, researchers found that increases in minority student representation were less likely at test-optional colleges that were also dealing with financial or enrollment-related pressures. 

Greta Hsu, co-author of the paper and a professor at the University of California, Davis, Graduate School of Management, said in a news release that “although test-optional admissions policies are often adopted with the assumption that they will broaden access to underrepresented minority groups,” their effectiveness depends “on existing admissions values and institutional priorities at the university.”