This is one of the newest competitive leagues available to play in. If you are in high school, you should really go check them out.
They have been some of the friendliest people I have met online, and are always looking to improve and help.
It is a non-profit, meaning that there are no fees currently in order to sign up for the league.
The July season is coming up, so go ahead and look for a team and email Pikerd.
Even if you aren't able to play, come and watch the streams, Tuesday and Thursday for League of Legends, the playoffs are this week.