I wouldn’t count on government funding right now. Art, Music, and Physical Education are the three programs that get funding cuts most often, and in that order. Probably the best way to fix this problem since it appears to be so widespread (5 schools that are outdated), would be to approach your local government or attend the next county meeting and raise the issue. Often, local government reserves the right to introduce something called a SPLOST or Special Purpose Local Option Sales Tax. The SPLOST was designed for issues just like these. I don’t know if your state will have something comparable to this. In Georgia, the counties can add up to 2% to the total sales tax and keep that money for improvements to schools, public facilities, roads, etc. The issue is that usually the SPLOST is always used up and there isn’t ever enough to go around. Schools, unfortunately, get the short end of the stick more often than not.
I would definitely raise awareness on the issue and get others involved. All local government meetings are open to the public, but don’t be intimidated. Take advantage of this. You might also try to get the local press to cover the story. Don’t underestimate the power of the news media. That’s a little extreme for volleyball netting. However, the idea is still the same I think. If you really believe in cause, raise awareness! It can only help as long as you go about it the correct way.
These are just some suggestions. I hope this was helpful!