Sec. 3. As used in this chapter, "police department" means a police department established by:
(1) a county;
(2) a city;
(3) a town;
(4) the state;
(5) a school corporation (as described under IC 20-26-16);
(6) a postsecondary educational institution (as described under IC 21-17-5-2 or IC 21-39-4-2); or
(7) a hospital under IC 16-18-4.