The Windsor and Maine-Endwell districts both purchase the enterprise version of Schoology. This means that your grade book (eSchool and SchoolTool, respectively) syncs with Schoology regularly (daily, hourly, etc.). This sync is what automatically creates your courses in Schoology, and enrolls the correct students in each course.
This sync process removes any students from a Schoology course that are not ALSO on the roster in the grade book. Regardless of whether the individual is a student in the district or a teacher, in Schoology people who are not course admins are viewed as students. As a result, if you (as a teacher) join another course using the join code, you will be removed from that course when the next sync occurs.
The solution to this is to make the other teacher a co-admin in your Schoology course.
The video to the right walks you through this process. There are also step-by-step directions below if you prefer:
Navigate to the course in Schoology you want to add the additional course admin
Click on "Members" on the left hand panel
If you are promoting someone already in the course, skip to Step 5. If the person needs to be added to the course, continue with Step 3.
3. Click the "Add Members" button towards the top of the screen
4. Select the member to add to the course and click the "Add Members" button at the bottom of the window
5. Find the name on the list of course members you want to make an admin, and click on the gear to the right of their name
6. Select "Make Admin", and then the "Confirm" button at the bottom of that window
To remove admin access, you can reverse the process (click on the gear and select "Remove Admin" from the option list.