Sarah Glass is my mobile phone hero:
To get notifications from the Lyme School website, you will need to download the Lyme School App:
Apple: https://itunes.apple.com/us/app/lyme-school-nh/id1322063781
or
Android: https://play.google.com/store/apps/details?id=com.apptegy.lymenh
Once downloaded and installed, be sure to go to Settings, Notifications, and opt-in. See screenshot below: