How does teaching preschool play a role in writing?

For my project, I need to explain how teaching preschool/ early childhood education plays a role in writing. I have researched it, but I am not sure how it does. Any suggestions?

I’ve been teaching for 25+ years and I am not sure. I’ve taught prekindergarten for 10 of those years and unless I am here answering questions, or on a pre-K yahoo group, it has not played a role in my writing.

I could make sense of the question if it asked how being enrolled in preschool played a role in a child learning to write, but not as it stands now.