Sec. 21.511. RULES. The commissioner shall adopt rules to implement this subchapter. Added by Acts 1999, 76th Leg., ch. 396, Sec. 2.07(a), eff. Sept. 1, 1999. Amended by: Acts 2009, 81st Leg., R.S., Ch. 87 (S.B. 1969), Sec. 7.001, eff. September 1, 2009. SUBCHAPTER L. TEACH FOR TEXAS PILOT PROGRAM RELATING TO ALTERNATIVE CERTIFICATION