It means you're taking out loans unless the school specifies that all need is met through grants. The list of schools meeting need through grants isn't particularly long
Amherst College
Bowdoin College
Brown University
Colby College
Columbia University
Davidson College
Harvard University
Johns Hopkins
Massachusetts Institute of Technology (MIT)
Northwestern University
Pomona College
Princeton University
Stanford University
Swarthmore College
University of Chicago
University of Pennsylvania
US Air Force Academy
US Military Academy (West Point)
US Naval Academy
Vanderbilt University
Washington and Lee University
Yale University
https://blog.prepscholar.com/colleges-that-offer-complete-financial-aid