I'm Asian and I get what you mean! *tears hair out in frustration* XD
My friends made this 'actual grade and their meanings' guideline, thought I might share it: A stands for 'acceptable' B stands for 'bad' C stands for 'catastrophe' D stands for 'destruction' E stands for 'everlasting pain' 0_o F stands for 'forever alone' D:
I feel like this should be a part of a bigger piece. It just feels...unfinished, like it cut off part way through and the rest of it is missing. If he was rushed, then he probably has more of this in his head, but he's too busy to get it out just yet. If this is the case, then hopefully we'll see the rest of it soon.