Use this mr obreins class tier list to rank your favorites from best to worst. Drag items into S, A, B, C, or D tiers and share your mr obreins class rankings with friends. Whether you're debating the best mr obreins class or settling an argument, this tier list maker lets you create the perfect mr obreins class ranking and compare with other Americans on TierBuddy. Popular categories include teachers, education, schools, best-teachers.