This school offered four years of mechanical, machine, and architectural drawing to the students. It was one of the last classes left in the industrial arts wing. (the district had already eliminated auto mechanics, and was talking about getting rid of metal shop, wood shop, and electronics)
It was one of the classes that made a practical connection to the math I was learning (initially geometry, and some algebra in the advanced mech. drawing classes).
In addition to revealing the practical application of advanced mathematics, this class taught me line control, accurate measuring, and 2 & 3 point linear perspective (all of which gave me an advantage with later art classes). It also gave me a desire to figure out how things are made, and communicate the discovery through visual means.