Click on the link to read the entire Curbed post.
Note that Bloomingdale's Parker Flats is among the list.
In Washington, D.C. there are roughly 21 schoolhouses built between 1865 and 1930 that are either vacant or dilapidated, while approximately 25 schoolhouses have been adaptively reused into housing, homeless shelters, community centers, a gym, and more. The reason why there is such a large number of old school buildings in Washington, D.C. is partially because of segregation and changing demographics, reported The Washington Post in an article published in 2004.
Here is the entry for Parker Flats: