A great resource: The annual Poet’s Market and Writer’s Market books, available online for next to nothing (if you’re willing to buy an outdated copy).
You can also type in searches like “short story contest” into Twitter, and there’s always something happening there.
You should seriously consider sending work in to the Scholastic Writing Awards – it’s hard to achieve recognition in this prestigious contest, but that also means it’s great news when you get recognized!
Also, Be vigilant against “vanity presses” – publications that will accept *anything* just to dupe you into paying for your own poem, in print. A decent forum for discussing fraudulent publications can be found here.
PROSE & POETRY
Marginal – The HHS Art & Literature magazine, now accepting submissions year-round
CLICK HERE for a good list of writing contests, many of which carry cash prizes!
Aerie International – A highly acclaimed High School Literary Magazine located in Montana that accepts submissions from all over the world.
The Claremont Review – Publishes works created by writers ages 12-19
The Marble Collection – Exclusively for Massachusetts students. Send an inquiry before submitting – we’ve had some issues in the past with their not accepting poems at certain times during the year. [UPDATE: As of November 2018, the Marble Collection is not accepting submissions. They may start up again, or the magazine might completely go under. Check in to their website for updates]
The Apprentice Writer – A print publication put together by Susquehanna University
Teen Ink – One of the largest student-only publications out there. This would be a good starting point, but go further than just this publication.
The Concord Review – Accepts student literary essays for publication
Hanging Loose Press – Try this one as well
Polyphony HS – Pretty comprehensive magazine – highly endorsed
Here’s a book that can help you get published
Bright Hill Press – Browse around this page, there is often a poetry contest for high-school students. Check back every so often.
***Nothing Yet – still looking***