105 ILCS 5/34-77

The school treasurer may be required to keep all moneys in his hands belonging to the board in such places of deposit as may be ordered by the city council but he shall not be required to deposit such moneys elsewhere than in a savings and loan association or a regularly organized bank. No bank or savings and loan association shall receive public funds as permitted by this Section, unless it has complied with the requirements established pursuant to Section 6 of "An Act relating to certain investments of public funds by public agencies", approved July 23, 1943, as now or hereafter amended.