Overview
The school demo site has been created and now you want to provide access to the demo site to the users (eg: Teachers) that belong to different schools in the same District.
Solution
Since a separate set of data files is created for SIS imports for each school, the information related to users that belong to different schools from the same District should be created in the SIS or in the Sloopy import files in such a way that they belong to the same demo school.
Testing
After the next SIS import as per the District's settings, the users from different schools will have access to the demo site.