Use a Purchase Order Request an Estimate Some districts require you to submit an official estimate to generate a purchase order. If you need an estimate, click here. Submit a Purchase Order If you already have a school purchase order number, click here. Your account will be set up very quickly once we receive your PO. School Discounts We offer school discounts! If you have 3 or more teachers that are interested in A1T Memberships, click here for more information.