A student, usually 11-12 years old and in the bottom grade of middle school. 95% of sixth graders are immature brats that think they're cool because they are finally in middle school. Girls will all be teenyboppers, talking about boys too much and saying "oh my god" every other sentence. Guys will be typical 11-12 year old males. Most 7th-8th graders dislike 6th graders by nature, so don't take it personally. It will just get you in a lot of trouble.
6th grader: OH MY GOD SOOOO LIKE I TALKED TO LIKE BILLY YESTERDAY AND HE SAID MY LIKE HAIR WAS LIKE SOOO PRETTY AND LIKE OH MY GOD MIDDLE SCHOOL IS LIKE SO COOL I LOVE MIDDLE SCHOOL BILLY IS SOOOOOO CUUUUUTTTTTEEEEEE!