How to find School Districts/PTAs in Need?

Hi! I just got a promotion at work and I'm looking for ways to put some of the extra money coming in to a good cause. My wife recommended we look into a grant to a PTA in need, perhaps with the goal for providing options on after school programs. Is there a way to figure out where I might best put my money to use? Are there known schools with more needs that I'm perhaps just oblivious to? Thanks!