Stephen,
That seems to be true. I know my high school dismantled one of two remaining tech classrooms (of the original 4 from when the schools was built) to add more space for other programs. I worked with my asst. principal (whose model of a Southern Ry. PS-4 on his desk attested to his interest in railways) to acquire some of the machinery from the shop for a local railway museum. Unfortunately, it did not work out.
While substitute teaching, I was witness to some absolutely scandalous things in tech classrooms. One day while subbing, we went through and identified the name and purpose of the different parts of the internal combustion cutaway they had in their room. They described it as "the most fun the ever had in tech" and were mystified as to why a music teacher knew stuff about a car engine.
Steve