Many companies offer apprenticeship jobs that one can apply for. To find these apprenticeships one can go to the website Indeed, CareerBuilder, or Monster.
A listing of apprenticeship programs can be found on the U.S. Department of Labor Web Site. By searching through their database an individual can find and apply for an apprenticeship program.
It's possible to become an electrician by taking vocational courses at the high school or the community college level. The next step, or even done concurrently, is to get into a union apprenticeship program. Both directions lead to licensing as an electrical contractor. Unions often combine vocational and classroom instruction.
If your son is interested in this field, he should look for an electrician school that offers an apprenticeship program. Request information from different colleges and compare the schools on what programs they provide.
For training after high school to become an electrician your best option is to join an apprenticeship. You will get formal classroom training on electrical theory, safety, etc... and also get paid on the job training experience. If you are in the US or Canada, search for The National Joint Apprenticeship and Training Committee (NJATC) and you can find an electrical apprenticeship program near you.
When becoming an electrician, you go through a period of apprenticeship.
I think the IBEW (international Brotherhood of Electrical Workers) requires 5 years apprenticeship under a journeyman electrician to be allowed to work without supervision. Schooling in electrical theory and electrical building codes is also required to complete the apprenticeship program.
B electrician
This depends on the state that you live in. For example in California, an apprenticeship program needs to be attended (http://www.dir.ca.gov/das/electricaltrade.htm).
You can find a schedule of apprenticeship training on the National Joint Apprenticeship and Training Committee's (NJATC) website: http://www.njatc.org/calendar.aspx
If you are an electrician with enough experience you can contact the local in your area (see the Related Links below for more info). If you have no experience you can apply for their apprenticeship.
4 years apprenticeship