To remove that banner go to:
  1. School Website > Websites > Edit into your site
  2. Select Master layout
  3. Click the name of the Master layout for the affected page 
  4. Scroll down to the content region and click the X to remove the Page Title
  5. Apply changes
Once you do that you can go page to the actual page under Pages & Menus, view the page and should no longer see the title on top of your banner.