High School Communications Contest - March 2015 deadline
The National Federation of Press Women hold several contests each year, one of which is for high school students. Time is nigh to register - and past nigh to start writing! - so consider yourself prodded.
FreelanceWriting.com offers a nice list of Creative Writing Contests (for adults and young writers) with NO entry fees. Gotta like that! Check the website for one that may inspire you. Happy typing!