Mistakes...

There are some spelling errors that arent part of the grading but are mistakes nonetheless. Example: Shorty after,...
I do believe it is meant to be SHORTLY.
If youre going to design a grading game about grammar and spelling you might want to proofread it before putting it on the market. Also I agree with others that the speed is too fast. Proper grading cannot be done at such a fast pace. It will only lead to many missed mistakes. Other than that this is a fun addictive game.

Sasssysweeet about The Grading Game, v1.5