Youth Ministry

My church has both children and youth classes, which are based on grades. I'm not entirely sure about the younger grades, but I believe 6th grade and up is junior youth and high school is senior youth. I'm actually in the senior youth class even though I'm 20, because I'm still in high school. (Long story, and not my fault for the most part. Basically I got put behind a couple grades and this is my senior year.)
The youth group acts almost independently from the rest of the church on some things. Sunday morning classes (for senior youth) are usually based on a curriculum, but only loosely so. The teachers like to do their own thing with it.
The youth group also leads worship one Sunday night a month, and we do a "fifth Sunday" where we "take over" a Sunday morning service every few months.

There's also a young adults class. When I first went there they were going to place me there until they found out I was still in high school.