Section 30(1): amended, on 1 January 1993, by section 5(2) of the Education Amendment Act (No 4) 1991 (1991 No 136).
Section 30(1)(ab): inserted, on 21 December 2010, by section 8(1) of the Education Amendment Act (No 3) 2010 (2010 No 134).
Section 30(1)(d)(ia): inserted, on 21 December 2010, by section 8(2) of the Education Amendment Act (No 3) 2010 (2010 No 134).
Section 30(2): amended, on 1 July 2013, by section 413 of the Criminal Procedure Act 2011 (2011 No 81).