course of instruction

NOUN
21 LETTERS · STARTS WITH C

course of instruction is a valid 21-letter word worth 26 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
C3O1U1R1S1E1O1F4I1N1S1T1R1U1C3T1I1O1N1
3 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 0 + 1 + 1 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 =26 PTS
DOUBLE WORD → 52TRIPLE WORD → 78
MEANING

What does course of instruction mean?