(35 ILCS 200/15-90)
    Sec. 15-90. Military schools and academies. All property of military schools and academies is exempt, including buildings, equipment and lands, not exceeding 10 acres, if used exclusively for school purposes and wherein military science and instruction are part of the course of study and are regularly taught, and where there is detailed by the Department of the Army at Washington, D. C., an officer from the United States Army, as Professor of Military Science and Tactics, and the graduates of which are eligible to appointment as Brevet Second Lieutenants in the Illinois National Guard, or are eligible to appointment as Second Lieutenants in the Officers' Reserve Corps of the United States Army.
(Source: Laws 1959, p. 1549, 1554, 2219, and 2224; P.A. 88-455.)