If a teacher is assigned to a different school in the Sown To Grow platform, they will not populate on your admin view. Teachers have the ability to change their school site in their settings. At this time, users with only a teacher account are able to be assigned to 1 school at a time. Sown To Grow is working on building out the capability for teachers to be assigned to multiple locations within the platform.
To see how to change My School in Sown To Grow, please read the following article: