From My Content, I built a point feature layer for students to collect information about a vernal pool on their campus. I shared the hosted feature layer with everyone and, therefore, with the ArcGIS org in which it was made. I checked Settings to make sure it was editable. I added the layer to a map and shared the map. I checked map settings and it's shared. Everything is shared and editable, as far as I can determine.
I can view it in Collector, edit it in Collector, view edits in ArcGIS Online, etc. It works fine for me. However, teachers in the Org, including one of the administrators of the account, can't access my map in ArcGIS Online or in Collector.
