105 ILCS 5/5-1a
Notwithstanding any other provision of this Article or the School Code, the school board of any high school district that is located in a Class II county school unit and that on or after the effective date of this amendatory Act of 1991 is subject to the jurisdiction and authority of a township treasurer and trustees of schools of a township in which all or any part of that school district is located may not withdraw from the jurisdiction and authority of that township treasurer and those trustees of schools and transfer or otherwise submit to the jurisdiction and authority of a township treasurer or trustees of school of another township, unless the school board of each underlying elementary school district whose territory includes all or any part of the territory included within that high school district, by resolution, consents to the proposed withdrawal by the school board of that high school district from the jurisdiction and authority of the township treasurer and trustees of schools of the township to which that high school district is subject and the transfer or other submission by the school board of that high school district to the jurisdiction and authority of a township treasurer or trustees of schools of another township.
A high school district that is subject to the jurisdiction and authority of the township treasurer and trustees of schools of a township in which those offices are abolished as provided in subsection (c) of Section 5-1 shall thereupon be required to appoint its own school treasurer as provided in paragraph (4) of subsection (c) of Section 5-1 and subsection (c) of Section 8-1, and shall be subject to and governed by the other changes made to the School Code by this amendatory Act of 1991, insofar as the same are applicable to a high school district.
105 ILCS 5/5-1a