The Daily Beast: The academy might seem like a bastion of American liberalism but an extensive database of faculty salaries compiled by The Chronicle of Higher Education paints a damning picture of gender inequality at U.S. colleges and universities.

Not only does the data reveal a substantial gender pay gap at both private and public schools, it also shows that male-dominated college faculties disproportionately rely on the labor of women in instructor and lecturer positions.

Women may keep our colleges running but the American university is still an old boys’ club.

The Chronicle of Higher Education’s new tool displays faculty and staff salary data from over 4,700 colleges and universities stretching from 2003 to 2013. The federal data powering the database isn’t brand new but it provides the starkest and most accessible visualization yet of the gendered distribution of labor in the American academy.