Some have seen unwanted email notifications showing up when changes are made to the Miramont Christian School calendar.

I'm not sure we've solved it, here's one suspect that should help:

On a desktop (not your phone), bring up calendar.google.com and click the three stacked bars on the upper left to open the side panel.
Down the panel, open 'My calendars' and 'Other calendars' searching for 'Miramonte Christian School'
Hover over 'Miramonte Christian School', and click the three vertical dots that appear 'Options'
Inside, click on 'Settings and sharing'
A new page appears.  Scroll down and check especially 'Event notifications' and 'Other notifications'.  If any say email, change them to be None.

You might need to do this more than once if you access the Miramonte Christian School calendar from more than one account, or are getting emails from multiple calendars.  Calls welcome: 408-858-8338, text 'school' if you're not in Laurin's contacts.