Dear jgeddis,
I do not mean to disrupt your contest in any manner, I just wanted you to be aware of it. Whether you call it a "yellow jacket" or a "hornet" either way it is a registered trademark belonging to Georgia Tech
http://www.licensing.gatech.edu/logostrademarks.html and changing the color unfortunately does not make it a different logo.
Mansfield High School is currently in violation of that trademark (unless they have express written permission to use it from Georgia Tech) and designers who submit anything too similar will also be in violation of that trademark. They can certainly do a hornet with a baseball bat, but should create their own version.
Best Regards,
Faith