master class

NOUN
12 LETTERS · STARTS WITH M

master class is a valid 12-letter word worth 15 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
M3A1S1T1E1R1C3L1A1S1S1
3 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 =15 PTS
DOUBLE WORD → 30TRIPLE WORD → 45
MEANING

What does master class mean?

NOUN · 1 SENSE
1

A class (especially in music) given to talented students by an expert.