From site:
If you are a public school teacher, librarian, coach or counselor, Supply Our Schools invites you to create a Supply List that details your students needs. If a donor purchases items from your Supply List, Supply Our Schools will have those supplies delivered to you.
You have only one obligation - the timely acknowledgement of receipt of the supplies. Supply Our Schools has defined timely acknowledgement of receipt as being within 5 business days of the Expected Delivery Date.