Well you shouldn't worry about popularity that much, because it's overrated. But a few things are: If you can, play sports. Also, be nice to everyone that way everyone will know who you are because when you're nice to someone, people remember you. Get involved in your school, like go to football games, or help out with school projects, you can meet more people that way.
Okay. Im a popular girl at my school, everybody knows me, and i know everyone. But a good way to become popular, is to be nice to everyone, no matter if there mean. Laugh alot, smile alot, and just be you. Dont change the way you look, just change the way you act. And dont be afraid to talk to popular people, if you get the courage to talk to them, they might help you become popular.