The teacher of a class has the ability to require approval on comments before they are published. There are two ways to identify if comments need teacher approval:
1.) An orange circle will show next to the "Comments" tab on your class homepage. This circle indicates how many comments are awaiting teacher approval (Hint: By clicking on this orange circle, you will filter your page to view only unapproved comments).
2.) An unapproved comment will appear yellow, rather than white.
To approve a comment, the teacher must click the orange "Approve" link that is located directly beneath the comment itself.