Most of the sites you visit as an urban explorer, particularly in North America, are in a fairly advanced state of decay. With vandalism, graffitti artists and taggers, as well as scrapper activity sites deteriorate quite quickly. As such, it's quite uncommon to be able to visit an abandonement which is in earlier stages of decay. This school in Detroit was one such site as evidenced by this dummy, used in teaching First Aid, that I'd come upon.
With a little bit of TLC, this dummy, along with the entire school could probably be opened to students in fairly short order.
There is a certain degree of eeriness that one feels when walking through a site that seems as though it could be in-use today.