There are many trade schools in the US , offering a vocational training in a number of different trades and skills. Usually you attend a trade school when you are serving an apprenticeship or training in a specific trade, and at the end of your vocational program you will be awarded certificates in the specific skills that you have acquired.
There are many different careers that require a trade school education, from all kinds of hairdressing, cosmetology and beauty trades to aviation and auto mechanics, plumbing, electricians, carpenters, and sheet metal workers. Trade schools for specific areas such as flying, marine and air navigation and air traffic control also exist. You may also attend trade school to learn about many technological, culinary and healthcare skills. Trade schools sometimes may have specific affiliation with trade unions or industries, or offer certain categories of apprenticeship.