Yes. Parents with children in more than one school using School Signals use a single login. Their account is shared across all participating schools.
When the parent signs in, they’ll see all their connected schools listed in the My Account panel and can select which one to view.
All profile details, visibility preferences, and notification settings are managed from the same My Account. Any updates—such as changing a phone number—automatically apply to every school the parent is connected to, keeping the account consistent across all schools.