Postsecondary teachers instruct students in a wide variety of academic and vocational subjects beyond the high school level. They also conduct research and publish scholarly papers and books. Educational requirements vary with the subject taught and the type of educational institution. Most commonly, postsecondary teachers must have a Ph.D. However, a master's degree may be enough for some postsecondary teachers at community colleges. In technical and trade schools, work experience may be important for getting a postsecondary teaching job.