Simply copy the Calendar ID links below, and paste into the Add a coworker’s calendar box (under Other calendars in Google Calendar) and press Enter. These calendars will then show up in your “Other Calendars” section. You can toggle these shared calendars on and off as needed by clicking once on the calendar name under Other Calendars.
All School Calendar calendar ID:
marlboroughschool.org_jgtjfiqf0su1eflpf3m4k3gj28@group.calendar.google.com
16-17 Rotation calendar ID:
marlboroughschool.org_tmcuojiu143ng4mou81devmvk8@group.calendar.google.com