Merlyn Climate Grants -Merlyn Climate Grants backs emerging climate leaders 13 to 30 in New England and New York. (Next Grant Application Deadline: MARCH 15, 2022.) Additionally, has links to the archive of previous teen writing.
NaNoWriMo Young Writers - Support for writers age 13-17 year round; Nation-Wide writing event in November. Registration required (free!). Occasional prizes for finishing challenges. See website & register for more details.
One Teen Story - A monthly magazine featuring the work of teen writers. Teen submissions accepted.
TeenInk - Written by teens, this is an online magazine to promote teen authors and artists. By far, the best of the best.
The Scriptorium - Archive of practical advice on writing and publishing, links to helpful sites, writing exercises.
Teen Writers Club - Archive of competitions, advice, etc. Registration required.