With campus locations throughout Pennsylvania, Connecticut and Massachusetts, we offer training in such trades as Automotive Technology, HVAC-R, CAD, Electrician, Plumbing, as well as Medical Assisting, Dental Assisting, Practical Nursing and Computer & Technology. About Our Company: YTI Career Institute, a subsidiary of Porter and Chester Institute, is a leading trade school for over 75 years and adheres to one basic vision: to educate and train our students to the level that will make them competent employees.