Collection of papers with non-standard dialect influence

[Cheryl Wharry]

I'm looking for examples of elementary, middle school, and high
school student writing that shows cases of non-standard language
varieties. Is there an existing collection? If not, does anyone have
examples from any of the aforementioned grade levels?
                     Thanks
                     Cheryl Wharry
                     Asst. Prof. of Linguistics/TESL
                   Columbus State University
                     Columbus, Georgia