Sample Ads For Schools
Once your voice system is set up and loaded with educational information, you can promote the benefits of the service to parents and teachers and cover the operating expenses with local sponsorships. Here are a few ideas that might help with marketing such a free service to your community.
Refrigerator Magnet/Sticker
Mail out these magnets or stickers that something like this when you notify the community of your new system. You might also suggest that they attach the magnet on their frig and/or stickers near their phones.

 
Flyer
Post and send out mailers like this to get people calling your new hotline.
Letters To Send Out
Letters similar to these should go out to all the teachers and parents/students to let them know of your new school system. Follow Up information about the uses of the system and individual passwords and mailbox assignments should also be sent.