Different majors, different academic qualifications, and different study time. The study time of Sophia apprentices will vary according to their majors and academic qualifications. Shangzhi Institute of Technology has four years of bachelor's degree, two years of master's degree and three years of doctor's degree. Sophia apprentice refers to students studying in Sofia, Bulgaria. Sofia Institute of Technology is one of the oldest technical institutes in Bulgaria. Founded in 1945, it provides education and training in various technical and engineering disciplines.