You may provide certain members of your staff with the added privileges to send email to the entire school.
In Account configuration, click the User Privileges link on the Edit Community Details page.
Choose the Email all box to add members whom you want give permission to email all the members of your account.
Click the Edit link in the box next to Email All.
Click Add Members/Add Groups links to add members/groups.
Select the member(s)/group(s) as appropriate.
Note: SchoolSpeak Support strongly suggests to not choose a group that contains parents such as the school group or a grade level group. Admins may opt to create an Office Staff group and add trusted staff members to this group.
Click Add selected members/ Add selected groups as appropriate.
Click the Go back link on the top-left to go to the Edit Community Details page.