105 ILCS 5/4-11
The county board, when requested by the county superintendent of schools, shall designate one or more banks or savings and loan associations in which the funds and moneys received by him by virtue of his office may be deposited. When a bank or savings and loan association has been designated as a depository, it shall continue as such until 10 days have elapsed after a new depository is designated and qualified by furnishing the statement of resources and liabilities required by this Section. When a new depository is designated, the county board shall notify the sureties of the county superintendent of that fact, in writing, at least 5 days before the transfer of funds. The county superintendent of schools shall be discharged from responsibility for all funds and moneys deposited in the banks or savings and loan association so designated while such funds and moneys are so deposited.
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.
105 ILCS 5/4-11