Oh my god, lay off him. If he's "just in seventh grade" that doesn't justify saying he's as dumb as a fourth grader because he doesn't know what a metaphor is, which I think he might. I mean, sometimes when I read these types of posts I wonder if your incentive is to be productive, or start an argument. Why you would want to start an argument, I don't know. But you act fifteen, I hope your not thirty for your maturities sake.
Maybe it's just arrogance.