Muting a member blocks the member from posting/messaging further. 

On Desktop:

• Navigate to your class through Left Navigation tray
• Click Manage at the top of the class
• In the Parents tab, Tap on the name of the member
• Select View Profile
• In the Profile page, click Options at the top right corner of the page
• Click Mute in class
• Successful pop-up message displays on the profile screen

Note: The member is successfully muted and a notification is sent to the member indicating that he has been muted.

When the teacher mutes the parent/parents, then they cannot post and comment on the post.