It is important to attain a high school diploma and go through much college schooling in order to become a valuable and successful psychologist. Although there a few jobs available to psychologists with a bachelor’s degree, acquiring a master’s or doctorate in clinical psychology will broaden the occupations available to a clinical psychologist. Most of the jobs for a clinical psychologist require a Ph.D. It is necessary to earn a license before working as a clinical psychologist. The average amount of years in school to become a clinical psychologist is 8 to 12 years.