Here are some free online resources you can sign up for to hear about schools closings.
WCSH6- this one requires your cell phone to accept text messages, it took me less than 5 mins. to sign up.
WMTW- this one requires an email address to get the alert, it took my less than 5 mins. to sign up.
MaineToday.com-this is the Maine newspapers and you need to sign up to be a member first, then select to be notified about storm closings, this took about 10 min. to sign up.