由Sakshi Goel.
Hi Tara
To assign a teacher a front page role (assign her to all courses) you have to make a teacher role in system context. Refer here for doing this http://docs.moodle.org/23/en/Assign_roles#System_context . After that you have to assign a teacher a front page role from SEttings > Site administration > Users > Permissions > Assign system roles.