We also need to remember that schools are built to host athletic events for more than just Football. If a field has a track ( most do) the will make if smaller. How many public schools are going to be able to get the school board to build 2 separarte staduims? Tax payers would go nuts! It is true that the fields need to be wider but unless the soccer team plays at a diffrent site, this is going to be diffucult. But you can make the field better by planting winter rye and keeping it mantained. That is if the AD/FB coach will let you.
