In most states, Electrician, plumbing, and other building/construction trades your trade school is an apprenticeship. You go to school a few nights a week or one day a week and work/learn on the job the other days of the work week. And you can earn a living while learning a trade. Win/Win... no educational loans to repay forever and make a decent wage once you get even half way through the apprenticeship, not to mention what you make once you get your journeyman card.
For machinists, mechanics, and welders I would definitely consider a good trade school or community college program. These particular trades need additional technical training that these schools give in a very short time due to all the new tech installed in new equipment these days or specific requirements such as welding certifications.
Check your state's apprenticeship division to see how to get on the list. Be aware this isn't a slam dunk, though. Most apprenticeship programs require decent high school transcripts with strong science and math skills along with manual dexterity. A good dose of motivation also helps ...
