105 ILCS 5/17-2.2e
Notwithstanding any other provision of law, beginning in levy year 2016, a school district that contains a federal military installation and is eligible to receive impact aid under Section 8003(b) of the federal Elementary and Secondary Education Act or any successor program may, subject to the restrictions set forth in this Section, levy taxes for any of the following purposes at a rate that exceeds the maximum rate set forth in Section 17-2, Section 17-2.2a, or Section 17-2.2c, as applicable:
If the school district levies a tax for any of the purposes set forth in items (1) through (5) that exceeds the maximum rate set forth for that purpose, it shall first adopt an ordinance setting forth the preliminary tax rates for all purposes for the taxable year and submit those extensions and rates to the county clerk. The tax rates for items (1) through (5), as provided in that ordinance, may not exceed the maximum rates for those purposes set forth in Section 17-2, Section 17-2.2a, or Section 17-2.2c. Upon receiving the tax levy confirmation with the extensions and rates from the county clerk, the district may, at a public hearing, adopt an ordinance adjusting those preliminary tax rates. Notice of the public hearing shall be provided in the form and manner set forth in Sections 18-75 and 18-80 of the Property Tax Code not more than 14 days nor less than 7 days prior to the date of the public hearing. The adjusted tax rates for items (1) through (5) may exceed the maximum rates, provided that the adjusted aggregate tax rate for all purposes may not exceed the aggregate tax rate for all purposes set forth in the ordinance setting forth the preliminary tax rates.
105 ILCS 5/17-2.2e