Education is the process of acquiring knowledge through a process of learning. Before birth, humans begin the learning procedure, and continue this process until death. Education can be categorized by the age of which a person being educated or by the subject on which an individual focuses his/or her study. For example, there is child, college, continuing, and adult education. People who practice teaching pass on knowledge, skills, and trades are educators. Educating an indivudual or groups of people may take place in a variety of locations. Schools, colleges, and universities are the most common places in which studies are conducted. However, learning and educating can be done at home or off campus via internet and telephone class-participation.