Where can I find a short story writing contest if I'm only in 5th grade?

My story is about myself. I'm in 5th grade. I have a story to enter in the contest that has an about the author, and a cover page, It also is 10 pages (including the cover page+about the author.)

and so what ? you take a pencil and you write that you see , answering few questions : where i am, who is this one, what is about the subject ???
write clearly whithout error of logical, not whith nonsense, a thing after another quietly whith intelligence (if you are able to of course...), and - maybe you will read it - nothing must be a reproach or something nasty or outside of the contest..like if you are speaking whith a friend...not too much, not too short...
we must do think that you can do that whithout problem.

You could write a sex paper about how sex happens and how hard grils work for sex and stuff like that

yuk um were talking about school here not sex