Read: The real reasons legacy preferences exist

Over the past two centuries, higher education has served as America’s most potent engine of social mobility. The creation of public university systems and community colleges, visionary legislation such as the GI Bill and the Higher Education Act, and universities’ own investment in financial aid have given students from all socioeconomic backgrounds greater access to higher education and the opportunities it confers. Today, according to the economist Raj Chetty and his colleagues, a child without a college degree from a family in the lowest income quintile has only a 5 percent chance of moving to the highest quintile. But if that child graduates from one of America’s most selective universities, the odds of making that leap rise to 60 percent.

Liberal-democratic societies make a compact with their citizens that anyone with enough grit and talent can move beyond the confines of the class into which they were born and live a better life than their parents. As we well know, Americans are increasingly cynical about that promise, believing that democratic institutions are stacked against them. As American higher education has become more stratified, with the wealthiest students concentrated at the most selective institutions, the unabashed commitment to legacy preferences cannot help but lend credence to that belief.

It doesn’t have to be this way. Extraordinary institutions such as MIT and Cal Tech have never entertained legacy preferences, and the University of California system did away with them in the 1990s. In 2014, Johns Hopkins joined their ranks. We made this change with little fanfare, so we could watch its impact and ensure that our approach was sustainable.

Admittedly, the decision to do away with legacy preferences was not easy. Defenders often argue that legacy preferences are a powerful tool to strengthen multigenerational bonds within a university community. Institutions like Hopkins rely on a robust network of dedicated alumni for counsel, outreach, and support. We take sincere pride in the fact that so many of our graduates feel such a strong connection to their alma mater that, years later, they urge their own children to apply. All our applications are subject to a holistic assessment, and many of these young people are exceptional applicants.

But maintaining the long-standing tradition of affording such students a routine admissions advantage based solely on their parentage had come at a high cost. It was impairing our ability to educate qualified and promising students from all backgrounds and to help launch them up the social ladder.

Read: Elite-college admissions were built to protect privilege

The year I arrived, Hopkins had more legacy students in its freshman class (12.5 percent) than students who were eligible for Pell Grants (9 percent). Now those numbers are reversed—3.5 percent of students in this year’s freshman class have a legacy connection to the university, and 19.1 percent are Pell-eligible—and we expect that the number of Pell-eligible students will continue to rise in the coming years.

Ending legacy preferences is but one piece of our university’s work to make a Johns Hopkins education accessible to all talented students, to mitigate the burdens of debt, and to ensure that students receive the supports and services that will help them thrive. These efforts are not a panacea for the structural inequities that plague our society. But they are necessary if American universities are truly to fulfill their democratic promise to be ladders of mobility for all.