This document provides guidance for K12 (primary and secondary) schools on the use of ArcGIS Online Organizations. It tries to give viewers enough information to understand what an organization is and does and why schools and districts should use them, without burying the viewer in minutiae. It presents guidance and suggestions, not hard and fast rules. It includes links for more information on the most confusing matters. Users in schools have found it helpful over the years. It gets updated on an as-needed basis.