If you would like to subscribe to ical follow these directions:

In the ical app on laptop/desktop go to File, Click on Create new subscription. Paste this link: https://calendar.google.com/calendar/embed?src=g.lincoln.k12.mi.us_om1iso6d477k689ie1dd4kujh4%40group.calendar.google.com&ctz=America%2FToronto

Set refresh to desire setting. I would recommend daily at minimal.