You must have grown up in a city because many, if not most small towns do not have an auto dealership and the back yard shade tree mechanics are probably not the best teachers. The same goes for newspapers, beauty shops, factories, etc.. Believe it or not my wife goes to a local vet (doggy doctor) to get her nails done which is done part time by the receptionist.
Basically what you are advocating are trade schools for children. And that wouldn't go over too well for our lack of scientists, engineers, etc. in this nation.
First of all, dipshit, who said anything about "backyard shade tree mechanics"? The mechanics who run the school's auto shop and also teach are fully certified, just as you would find at any good repair shop.
Second, what difference does it make if a town has an auto dealership? There's no town in America that doesn't have CARS or need them fixed. Which, by the way, is why most if not all high schools offer auto shop classes.
If your wife wants to get her nails done by a receptionist, that's her lookout. Personally, I prefer someone licensed by the state board of cosmetology, and I really doubt there's not a licensed manicurist somewhere near you.
Basically, yes, I do advocate trade school training for adolescents if that's what they want to do, although not all privatized public schools need to operate exactly as my son's school does. There's nothing about offering such training to those who want it that's going to reduce the number of scientists available, because the people who want it weren't going to become scientists in the first place. The vast majority of people in this country DON'T become scientists, or go into the professions, and they DO still need to learn employable skills. And EVERYONE could use a little training in holding a job and being a good employee, in my opinion, whatever they wind up doing in life.
Furthermore, you are making a massive assumption that my son's school does not still teach standard academics. I can't imagine WHY you would make that assumption, other than just a kneejerk desire to attack me, because I did mention academics. All of that is still covered, and the students are fully capable of going on to college if they wish, as many of them actually do. The trade courses are electives, and not everyone chooses to take them. Many of the students take more traditional electives, such as art, music, or woodshop, or unusual non-profit electives, such as dance, yoga, computer graphics, or special effects. This last is my son's favorite, and last night, he came home and showed me his middle finger, carefully done up in a box as a severed digit. ::sigh::
For the record, by the way, I didn't grow up in a city. I grew up in a pissant small town in New Mexico, which nevertheless did offer the electives of auto shop, wood shop, and photography. They just didn't teach them in a real-world, "this is how you work in this field" sort of way.