Jack Prelutsky has a site with a list of poems by students, including some from Angola, Afghanistan and Iraq. I found the Kindergarten (K) list especially fun, although I find it surprising that a K-level student would be able to write this:
My mind is like a shadow,
you can see it, but it isn’t really there.
My mind is like a sieve,
losing bits here and there.
Sounds like a budding security analyst…