Education in the USA
Higher educational institutions usually are governed by a board of regents or a board of trustees. The executive head of a college or a university is usually called the president. The various colleges or schools which take up a university are headed by deans. Within a school or college there may be departments according to subject matter fields, each of which may be headed by a professor who is designated as department head or chairman. Other members of the faculty hold academic ranks, such as instructor, assistant professor, associate professor, and professor. Graduate students who give some part-time service may be designated as graduate assistants or fellows. Professional education in fields such as agriculture, dentistry, law, engineering, medicine, pharmacy, teaching, etc. is pursued in professional schools which may be part of a university or may be separate institutions which confine their instruction to a single profession. Often two, three, or four years of pre-professional liberal arts education are required before admission to a professional school. Three to five years of specialized training lead to professional degrees such as Doctor of Medicine, Bachelor of Law, etc.