How do I set up Mystery Science as a district vendor? February 06, 2025 16:41 You can find a copy of our up-to-date W-9 here. If your district also needs us to complete a vendor application, please email the vendor application to us here. We'll complete it and return it to you as quickly as possible! Related articles What is your refund policy for Mystery Packs? How can I pay for my Mystery Packs? What is the pricing for Mystery Packs? What is the Mystery Science Vocabulary extension?