EASE OF ACCESS
Overlay multiple calendars to see when people are available - a great way to manage staff schedules, for example. Google Calendar sends invitations and manages RSVPs.
Calendars can be shared school-wide or with select colleagues. A range of sharing permission controls help maintain security and privac
Sync the built-in calendar on popular mobile phones such as Android and iPhone with Google Calendar or access your timetables from any device with a web browser. Even receive calendar notifications via SMS.