While a school admin can monitor who is unsubscribing from all group emails, group officers can monitor their own unsubscriptions. Here is how a group officer can do this:
Manage your group
Click on Emails
Click on Unsubscribed
This page will allow you use filters to view every user that unsubscribed from your group email. You will be able to see the following:
The date they unsubscribed
Information regarding this particular email (send date, sender)
The number of group emails the user received/opened before unsubscribing.
The explanation for why they unsubscribed if the user has left a message
Please contact firstname.lastname@example.org with any questions.