Doesn't seem the school district is that impressed with the results of the proposed cost savings
My cellar doesn't freeze even though there is no heat down there.
There is some downward heat loss through the floor, though.
Likewise the well pit is about 6 or 7 feet deep with just a couple layers of 2" styrofoam and the metal lid on top.
Just something that is fire proof, where one could shelter in place through the worst fire storm, would be worth it where we live.