And now for my $0.02 worth of knowledge. Which is about $0.03 more than it's probably worth.
When I was growing up, our youth group started out rather small. There was seven of us. Me, Wiley, Jeff, Jennifer, Miranda, Jessica and ....crud it was so long ago I forgot her name...Julie I think...
Anyways, after a while, the group blossomed, and another group of five showed up. Naomi, Tim, Jessica and two guys I can't remember. We were split along those lines. The New and the Old, with only Jennifer as the go-between the two groups.
Want to know what happened? How it changed? Nothing. It never did. Neither group wanted it, and both groups looked upon the other with distrust. When other circumstances caused me to flee that church I did not hesitate and left without looking back.
When I finally settled down at a new church I was older and wiser. An 18 yo, and quickly became a teacher. Yet still I saw the divisions in the church. I fought against it, I railed against it. Ultimately, I realized that they were happy that way.
I was the person who saw the problems, because ultimately, I did not fit in with any of the groups.
My point-of-view was just too alien for them all. I was too adult for the teens/young adults, too Biblically oriented, too knowledgable. The adults themselves would often find me strange because I failed to meet their expectations of what a 'teen' should be. I could argue semantics and doctrine with them, holding my own with the youth pastor and senior pastor.
THEY did not know what to do with me.
Ultimately, my convictions made me leave the Assembly of God entirely and I went to the Salvation Army.
Again, I found myself in an odd role. The Captain at the time, quickly put me into a position of teaching and responsibliity not because of my knoweldge of the Bible, but because I came from an AoG background and he expected me to support him as he tried to make that Sally Corps into a more AoG style church. The older members saw this and viewed me with suspsicion, and due to my own convictions I ended up not supported the Captain. This left me with two friends in the Corps. A father and a son. Sure all the other teens held me in a love/hate affair as in one hand I could relate the Bible to their world and they needed/wanted that, but on the other hand, I did things like forced them to stay in meetings, and held them accountable for what they did.
What's the point of all this? Simple. It doesn't change.
The cliques stay there regardless, and will always be there. What has to change is you. You have to find your niche and your beliefs and then stand for them regardless, and uncomprimisingly. Accept everyone, but demand they act in a Christian manner. And ultimately, believe in yourself, and have faith in your convictions, knowing that God's plans trump the cliques and the setbacks. Knowing that no matter how alone and rejected you get and are feeling that He is there beside you.