Brainy Pics Contest as part of SAT vocabulary word preparation. Brainy Flix Video Contest as part of SAT vocabulary word preparation.
Sometimes money and prizes are given.
Stossel in the Classroom Essay Contest
Quiddler: The Short Word Game
Combine letters into words. Contest begins in August and runs through May.
Doodle 4 Google http://www.google.com/doodle4google/
Doodle 4 Google has a competition where students K-12 will use their
artistic talents to think big and redesign Google's home page logo for millions to see.
Detail on their website.
Collective Banter: http://collectivebanter.com/
Community and competition for student artists, musicians, and writers.
The Artist's Magazine Annual Art Competition:
Coastal Poster: http://www.coastal.ca.gov/publiced/poster/poster.html