Sec. 2. (a) Except as provided in subsection (b), as used in this chapter, "public entity" means a:
(1) political subdivision;
(2) state agency;
(3) school corporation; or
(4) state educational institution.
(b) The term does not include an acute care hospital licensed under IC 16-21 that is established and operated under IC 16-22-2, IC 16-22-8, or IC 16-23, or a political subdivision established under IC 8-1-11.1.