Upload a screenshot or copy of your receipt for If I Built a School by Chris Van Dusen to participate in this bonus offering, while supplies last. Must be 18 years of age or older at the time of entry. Void where prohibited or restricted by law. No groups, club, or organizations may participate. Limited to one request per IP address. Incomplete forms will not be eligible. Multiple entries from the same email address will be automatically disqualified. US mailing address required. Please allow 5 weeks for the classroom pack to arrive by mail. Offer valid between July 16, 2019 and August 12, 2019.