The period commencing January 1, 1974 and ending August 31, 1974 shall be a fiscal year. Beginning September 1, 1974, each fiscal year of the board through fiscal year 1996 shall commence on September 1 of each year and end on August 31 of the following year. The period commencing September 1, 1996 and ending June 30, 1997 shall be a fiscal year. Beginning July 1, 1997 and thereafter, the fiscal year of the board shall commence on July 1 of each year and end on June 30 of the following year.
105 ILCS 5/34-42