An H1 tag can be added to each Master Layout on the website which will cause each page to have an H1.

To add an H1 tag to a Master Layout:
  1. Navigate to School Website > Website Management > Websites
  2. Click the 3-dot button for your main site
  3. Click edit website
  4. Select the Master Layouts tab
  5. Select the name to edit a layout
  6. Insert a text block in a non-obstructing location
  7. On the Text block, from the select Category drop down, click + Create New 
  8. Title your text
  9. Click Save & Close
  10. Click the pencil icon to edit the Text
  11. Select HTML in the top left corner to edit the HTML
  12. Enter <h1></h1>
  13. Click Update
  14. Click Apply Changes