Professors usually teach several different subjects. They are responsible for both preparing and delivering the lectures. They write exams, give grades, prepare exercises and advise students. They are required to counsel, teach and supervise students.
Most professors play a significant part in our nation's research.
They do experiments, collect and analyze data and research hypothesis. Some are responsible for meeting with colleagues, professional organizations and reading extensive literature. Tenured faculty in colleges have a doctoral degree. Two-year colleges usually require only a masters degree. A full professor needs a doctoral degree, extensive teaching background and research.