A friend of mine was the Principal at a school in the that district. This was in the late 70s. He said some kids were still living on farms and had to deal with farm chores, and the roads were difficult. Still, I grew up in the rural area of MoCo and we did not have similar closings. Though MoCo is south of upper Balt County. Still I also don't remember this happening when I taught in upper Carroll County. Balt County also closes schools in the Borcht-Belt of the County, for High Holy days.