As used in this chapter, the term:

(1) "Campus" means the grounds and buildings owned or occupied by a college or university or the grounds and buildings of a school or training facility operated by or under the authority of the State Board of Education. The term "campus" shall also include any public or private property within 500 yards of the property of an educational facility and one-quarter mile of any public street or public sidewalk connecting different buildings of the same educational facility when the property or buildings of the educational facility are located within any county in this state having a population of 400,000 or more according to the United States decennial census of 1970 or any future such census.

(2) "Campus policeman" means an employee of an educational facility whose duties include the enforcement of the laws of this state; the preservation of public order; the protection of life and property; the prevention, detection, or investigation of crime; or any combination thereof.

(3) "College or university" means an accredited, nonproprietary, public or private educational institution of higher learning located in this state.

(4) "Educational facility" means a college or university or a school or training facility operated by or under the authority of the State Board of Education.