CLASSES is a playable word

classis Scrabble® Dictionary

noun
pl. classes
a governing body in certain churches
54 Playable Words can be made from "CLASSES"
   2-Letter Words (6 found)
   3-Letter Words (16 found)
   5-Letter Words (9 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)