Become a Pathology Technician: Pathology Technician Training. In order to become a pathology technician you must have a bachelor’s degree with a major in a scientific based field and maintain a 3.0 GPA to advance to graduate training.pon completion of the 4-year degree program, a candidate who wishes to become a pathology technician must attend an additional 2 years of training in a NAACLS accredited pathology program.