There are several User Permissions that control the ability to Mass Drop All Classes from a Student record or a Family record.
Go to the Gear (icon) > Settings > Users & Permissions > User IDs (click on a UserID) > User Permissions (left menu) to set these permissions.
Note: If a User is logged in when changes are made to their permissions, they'll have to log out and then back in before the changes will take effect.
These are the permissions related to Mass Drop Classes:
|View Student Page|
|Families||View Family Page|
See Permissions for Jackrabbit Users for more information.