You’re considering ASE certification training, but you don’t know where to go to obtain it. The answer to this is almost as varied as the number of ASE certified mechanics. Some mechanics don’t attend any sort of training prior to obtaining their ASE certifications. Others go to one of the many industrial training academies around the country. The most famous of these is the Arizona Institute of Technology near Tempe. Some certified mechanics took community college courses as well. Where you go to get the training depends on your needs and desires at the time. If you don’t mind leaving home for up to two years, you can attend one of the training academies.
For more info, see Automotive Repair Service Questions: What to Ask