The Golden Baobab prize is looking for unpublished short stories written by children and young adult Africans, by 24th June 2012:
The Golden Baobab Prize, an annual African literary award, was established to encourage the writing of African literature for children and young adults by recognising gifted authors of the genre.
Entries are open for unpublished African-inspired stories written for an audience of 8 to 11-years-old, and 12 to 15-years-old.
The prize will award $1,000 each to the best stories in the two categories and $800 to the most promising young writer, 18 years and younger.
The excerpt above comes from http://dailytimes.com.ng/article/golden-baobab-prize-seeks-entries.
Note that "the author must be a citizen of an African state or a dual citizenship holder" and winners are announced in November.
Check out the full submission details here: http://www.goldenbaobab.org/how-to-enter/submission-guidelines.html