ESIS
2.2.1.6.4. Mass Creating Homerooms
  1. Sign in to eSIS.
  2. From the left-side menu, select "Schools".
  3. Expand the menu under "Schools" and click on "School Details".
  4. Choose your school from the list.
  5. Navigate to the "Homerooms" section.
  6. Click on "Upload Homeroom Information".
  7. Upload the pre-filled template, then click "Save".

This feature can be used to both add new homerooms and edit existing homerooms.