10th grader
This is coming from a current 10th grader.

A lot of them give us a bad name. They can't spell, they think they can DATE in 10th grade (Some think they're in LOVE. How funny is that?), and their Myspaces are cluttered with Glitter Graphics. A LOT of the guys are immature. All they do is make sexual jokes and say "That's what she said." Some think they're emo. Some will be wanna-be scene kids next year. (Judging by all the 11th and 12th graders.)

I'm nothing like that. I'm in 10th grade, and I like George Michael and Tom Jones. I do not dress like a slut and I don't think I'm superior to anybody. I'm not obnoxious.

The rest are just normal 10th graders. You can't really write a definition for '10th grader' because they're all different.
This is a 10th grader's Facebook status. She's from my school.
"stayed up all night talkinn' to himm. he isz my liyyfe now (:"

Next day: (No, I'm serious, the NEXT day.)

"I'm tired of thisz bullshit! I'm single, and staying that way! (:"

-10th grader