1. Go to Core > Edit User Profile Date
  2. Search for the User.
  3. Scroll down to the System Information section and click Employment.
  4. Setup the user to be a teacher in the system and set the role to be effective immediately.
  5. Log out and back in so that the role takes affect.
  6. Navigate back to the Bulletin Board and the teacher will now have access to edit the Bulletin Board content.