Correspondence school, through mail and telephone, has long been an alternative to the regular school system . It is very popular among professionals and students who wish to receive education while they are working outside of schools. As an alternative, distance education will appeal to particular students but has never been a replacement for in-class schooling because of the some deficiencies. For example, it is hard for students to ask questions on complicated matters and receive lengthy solutions by talking to instructors by telephone or mail. Also, it is impossible for a student to in…