EDIT: Thanks for all your support and comments. It means a lot to me, esp. since I haven't even been around much lately.

Rehashing what I said in a lot of comment replies... I actually ended up having a talk with my teacher just after I wrote this, and it turns out she just wanted to push me more since she thinks I "have so much potential." Which is quite reasonable if she really means it, though the message was very ambiguous at first. I think I can work through it now, though, and she gave me some good advice. But thanks again for sticking by me even as I was just ranting!
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when you receive blatant, seemingly-unwarranted, and worst of all, imprecise criticism on your writing?
I've never taken criticism terribly well. But I respect, if not like, it when someone who knows what he/she's talking about makes a definitive point that I've missed.
But today I got my journal back in English and there it was, 14/20's on almost every entry (they're graded separately) and the only comments are that everything is too vague and needs to be "Extended."
I don't get it. And it hurts me because I've been slaving away all month while she, an alleged amazing teacher who's taught here for years, has hardly noticed or cared what I do in her classes. Yes, I'm in two of her classes-- AP lang and creative writing. I'm the only student in the latter, which she shafts in with another one of her classes.
The journal pieces weren't polished, by any means. But they weren't meant to be. And they were my sincere responses to a series of staple, generic prompts. Written all in my usual style, of course.
How can you read all of that, pieces I've put effort into describing and explaining, and then just scribble a "too vague" at the end? Oh, and a long rambly note on how it's going to hurt my grade if I don't rewrite them.
I know it's stupid to get all cut-up over a class assignment. But it's too much to take right now. I am fragile as glass from stress and Nanowrimo. I have less than 5000 words to go and right now I can't bear to think about it. She also made me email the bulk of it to her earlier this month, in addition to a six-page short story, both of which she's not even taken the time to comment on. The strangest thing is that she loved my earliest journal entries, which were certainly no stronger than my last few. And now her general attitude towards my writing seems to be one of careless distain. I can't even describe how violated I feel.
And hurt.
It hurts to write and write and write even through the college applications and the late night practices and then to have something like this happen. Because I know for a fact that none of my peers are taking on nearly so much right now. I'm flying down to Florida this Friday for a national drum corps audition. My dream school's application has to be finished next Monday. I don't even know if I can do this.