Ten Out of Ten, 100 Percent Correct

This page is the CodyCross answer for the clue below from Underground Worlds, Group 2161, Puzzle 2 (Coal and Granite).

Question is: Ten Out of Ten, 100 Percent Correct

and the answer is: FULLMARKS

Word Meaning:

FULL MARKS — Expressing complete satisfaction with someone's efforts.

Definitions from Wiktionary.