Yes. Check out these opportunities.
Children’s Magazines and Ezines
A good place to look is at the magazines you read. Do you see a kid’s or children’s section? Or there might be a “reader’s art” section. Here are some I found:
Creative Kids Magazine – for kids 8 to 16. “Material may include cartoons, songs, stories between 500 and 1200 words, puzzles, photographs, artwork, games, editorials, poetry, and plays, as well as any other creative work that can fit in the pages of the magazine.”
KidPub – books and stories by kids online – free to read, but membership ($12.95) is required to publish stories.
New Moon Girls – writing and art by girls 8 and up.
Stone Soup Magazine – features stories, poems and art by kids 8 to 13.
Contests
Contests aimed at children are a good place for young people to submit. Here are a few:
Adventure Write Kids has an annual contest for kids under the age of 19.
National Geographic Kids often has some contests – search the site.
PBS Kids has a story writing and illustrating contest for kids in K-3rd grade.
Scholastic has an annual Kids Are Authors contest.
Other
Young Authors Guide – this website has advice, links to magazines, and contests ordered by deadline.
The Young Writer’s Guide to Getting Published by Kathy Henderson has been a good resource in the past, but the copy on Amazon is pretty dated (2001)
Young Writers Society is an online community for young writers – ages 13+
Advice
Same as with adults submitting, kids and teens need to follow the directions exactly.
Here’s a post on the basics of book publishing with a paragraph addressed to young writers. https://janefriedman.com/start-here-how-to-get-your-book-published/
And a post directed to young writers: https://janefriedman.com/writing-advice-for-children-and-teens/
Writing Contests for Kids: http://imaginationsoup.net/2016/01/12/writing-contests-kids-ways-get-published/
A website specifically for kid writers: http://kidsarewriters.com/
I just found some more sites on this last day of 2016: http://goteenwriters.blogspot.com/
http://www.readbrightly.com/6-great-websites-teen-writers/