Professors specialize in any of a wide variety of subjects and fields. Some teach academic subjects, such as English or philosophy. Others focus on career-related subjects, such as law, nursing, or culinary arts. Professors usually work for large universities. In this setting, they often spend a large portion of their time conducting research and experiments and applying for grants to fund their research. Frequently, they spend less time teaching. Classes may be taught by graduate teaching assistants, who are supervised by a professor.
