You have a good question. It’s quite curious.
Williamette says it reset its tuition for 2020-21 , perhaps its accounting is still being sorted out. “ This means that our standard undergraduate tuition rate will be lowered by almost 20%, in order to more accurately represent what students actually pay after scholarships and financial aid are applied. Next year’s tuition rate applies to students in the College of Arts and Sciences.”
Maybe ask them directly. inre-info@willamette.edu