Resetting Shared Classroom Calendars Without Losing Permissions

Shared classroom and room booking calendars are among the most critical infrastructure in any school or university using Google Workspace. They are shared with multiple staff members, integrated with booking systems, and sometimes visible to students or external parties.

At the end of each year, they accumulate hundreds or thousands of past bookings that need to be cleared. But clearing them incorrectly — by deleting the calendar — causes significant disruption. This guide explains how to do it properly.

Why you should never delete a shared room calendar

When you delete a Google Calendar and create a new one to replace it, the new calendar has a different internal ID. This means:

• Every person who had access needs to be re-invited individually
• Any booking system that references the calendar by ID will break
• Any external subscriptions (for example, parents viewing the school calendar) will stop working
• Any Google Meet rooms or hardware integrations linked to the calendar are disconnected

For a calendar that has been in use for several years, rebuilding all of these connections is a significant project that can easily cause disruption at the start of a new term.

The correct approach: clear events, preserve the calendar

WipeAway removes only the events from a calendar, leaving the calendar itself — and everything connected to it — completely intact. The calendar's internal ID does not change. Sharing permissions are unchanged. All integrations continue to function.

How to reset shared classroom calendars

1. Sign into wipeaway.app with an account that has edit access to the room calendars
2. Select all the room and classroom calendars you want to reset
3. Set a cut-off date — the last day of the academic year is the typical choice
4. Review the event count for each calendar
5. Confirm the deletion

All past bookings are removed. The calendar remains in place, shared with the same people, connected to the same systems, ready for next year's bookings to be loaded.

What about future bookings already made?

If staff have already started booking rooms for the new academic year, those bookings will be preserved as long as they fall after your cut-off date. Set the cut-off date carefully to capture all past bookings without affecting future ones.

After the reset

Once complete, open a sample of the room calendars in Google Calendar and verify that past bookings are gone, future bookings are intact, and sharing permissions are unchanged. Then inform the relevant staff that the room calendars have been reset and are ready for the new year.