An adjunct professor works for a college or university, teaching students about a particular subject. As an adjunct professor, you are a part-time instructor in your subject area. You may choose to work for multiple colleges or pursue a full-time career in your field to supplement your income or to gain more experience. Your job duties include developing curriculum, preparing lesson plans, teaching students in a classroom or online, evaluating student work, and posting grades. You may also assist with research in your chosen field, collaborating with full-time professors and research assistants. After working as an adjunct professor for several years, you may seek a full-time, tenure-track position.