Selling the naming rights to athletic fields and high school stadiums is not impossible and it has outstanding benefits to the school, the sponsoring company and the surrounding community.  Take a look at the video. 

There's a simple formula that revolves around the traffic at the major intersections (that you can get in most cases from the Department of Transportation) and the number of people attending events in the stadium (check with your bookkeeper for the old numbers. 

If you have any questions on how Orange County Public Schools did it, drop me an email and I can help navigate the process.  brian_siatkowski@yahoo.com