When I was in school, and even when my sons were at the same school, those vocational classes were a big deal. While you could take college prep and AP courses in all the High Schools, each High School in the county had a particular vocation that they specialized in. For my school, it was bricklaying, and they routinely produced national champions in brick laying competitions.
Another high school specialized in auto mechanics. Can you say NASCAR? Where you think those crew chiefs come from. Electricians, Plumbers, those high schools turned out qualified individuals that easily exceeded anything these for profit institutions throughout the nation, after high school, turn out. Welding, my nephew graduated from high school a few years ago, took all the welding classes. He is knocking down the money and has contemplated going into underwater welding, that is easily well over six figures a year.
One thing my high school did when I was in school, and I don't think they do it anymore. They built a house, each and every year. Masonry classes, carpentry classes, HVAC classes. And it was self-financed. They completed the house in that year and then sold it. The profit was dropped back into the program. And those homes sold, almost immediately, they were in high demand. The quality was top notch.