Helpful courses include psychology, counseling, English, and criminology. Knowledge of languages other than English is helpful. Applicants must be U.S. citizens and meet the age requirement. They also should be in good physical condition. Applicants must pass vision, hearing and drug tests.
Some employers require a two-year college degree in law enforcement or sociology.
A combination of experience and education may meet requirements. A few states require applicants to pass a written exam. Most states provide training on the job. Applicants who have a felony conviction may be disqualified.