The definitive ap courses ranked: easiest to hardest tier list - rank, compare, and debate the best and worst ap courses ranked: easiest to hardest. Place each item from S (GOATed) to D (bottom tier) and share your ap courses ranked: easiest to hardest rankings. Made for fans who love ranking ap courses ranked: easiest to hardest, this tier list maker is free, easy to use, and perfect for settling debates on TierBuddy. Popular categories include education, high-school, ap-classes, college-prep.