Ind. Code § 20-28-6-7.5
(b) A teacher who:
(3) has not at any time before July 1, 2012, entered into a teaching contract for further service with the school corporation;
shall be considered a probationary teacher.
(c) A teacher who:
(2) enters into a contract described in section 2 of this chapter;
becomes a professional teacher.
As added by P.L.90-2011, SEC.29. Amended by P.L.200-2023, SEC.13; P.L.214-2025, SEC.122; P.L.74-2026, SEC.100.