classification system

NOUN
21 LETTERS · STARTS WITH C

classification system is a valid 21-letter word worth 32 points in Scrabble and 36 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
C3L1A1S1S1I1F4I1C3A1T1I1O1N1S1Y4S1T1E1M3
3 + 1 + 1 + 1 + 1 + 1 + 4 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =32 PTS
DOUBLE WORD → 64TRIPLE WORD → 96
MEANING

What does classification system mean?