[Untamed]

Another way is to enter a school / cirriculum which is rare to the school but can help them raise money.

My sister got her PhD from Notre Dame, with a full ride plus monthly stipend and graduate housing (free) for going through their Bio-Chem PhD program. VERY few people in the nation do that, so Notre Dame wanted her to sign with them, do the work, and write grant requests for them. The work was long and hard but paid off.

You may find something similar, if you are looking for a graduate school for studies that are rare / uncommon.