I know its a complete long shot, but the elementary school I attended was torn down a few years ago and rebuilt. I think it was 2014-2015 when it happened. I wasn't into urbex at the time but I know some people have been around here for awhile, and I heard it had broken into it before it was demo'd. I've been scouring the internet for photos of it but they don't seem to exist.
It's St. Brendan's Catholic Elementary. The building that takes its name now is directly on top of where it used to be. 53°31'47.5"N 113°25'29.7"W