Box tops for education

Several years ago, I started collecting box tops for education. Our elementary schools collected them, back when my kids were in elementary and I assumed they still did, but it turned out that they didn't. I have been thinking that I should try to find someone who lives elsewhere, who has kids in schools that can use them. I had something like 500. Unfortunately, I recently looked at them with my glasses on and realized that they have an expiration date, and quite a few have expired. I think I have at least 150 that haven't expired, though, which would be worth at least $15, and I am still collecting them. Can anyone here use them?