Wow, I didn't think of the heat bill!!This is the school policy: "Administratively the “close school” decision would be triggered by a ‐40 F ambient temperature if there were little chance of moderation during the day. ". This is only our second winter up here, it was surprising with how cold it needs to be for school to be canceled. Our firsr thing we did after winter number one was put in a wood stove, our heating bill was ridiculous last year.