A question about Supplemental Applications?

<p>I am applying to the SUNYS in New York State-New Paltz, Purchase, Albany. On the Supplemental Applications it says I have to write a personal statement, about 250 words minimum, not really stating on what I should write about.
What does a personal statement mean and what can I write about?
I'm thinking about writing about my experience in theatre for three years in high school, or would that be irrevelant?</p>

<p>Thanks in advance!</p>