Make News on Front Page viewable to Teachers only

The hack that was performed for this option in Moodle v1.9 is no longer an appropriate hack in Moodle 2. Better option is to use Roles, Permissions and Capabilities.

That is, create a new Custom Role, give it the Capabilities of viewing the News Forum in the Front Page then ensure that the Authenticated User, the Authenticated User on Front Page and Guest Roles do not have that option allowed.