Special charter districts with population less than 500,000 – Authority to borrow money and issue bonds. The corporate authorities of any special charter district having a population of less than 500,000 governed by a special charter, or special charter and general law, may borrow money for the purpose of building schoolhouses, or repairing, altering and building additions to any schoolhouse already erected, or purchasing schoolhouse sites or purchasing grounds adjoining any schoolhouse site, or separated therefrom only by a public street or way, and shall also include the purchase of school sites outside the boundaries of the school district and building school buildings thereon as provided by Sections 10-22.35 and 10-22.36 of this Act, and may issue its negotiable coupon bonds therefor in such form and such denominations, payable at such place and at such time or times (not exceeding 20 years from date of issuance) and bearing interest at such rate as the corporate authorities may by resolution prescribe. The bonds shall be in denominations of not less than $100 nor more than $5,000, and shall bear interest at a rate not to exceed the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, if issued before January 1, 1972 and not to exceed the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, if issued after January 1, 1972, payable semi-annually. No money may be borrowed or bonds issued, however, unless the proposition to borrow money and issue bonds for the purpose or purposes and in the amount prescribed in the resolution is certified to the proper election authorities and submitted to the voters of the school district at a regular scheduled election in accordance with the general election law, and the majority of all the votes cast on the proposition is in favor thereof. The corporate authorities may not incur any indebtedness under this Section, which together with all other outstanding indebtedness, exceeds in the aggregate the indebtedness limitation under Section 19-1 of this Act that would be applicable if the district were not a special charter district.
     With respect to instruments for the payment of money issued under this Section either before, on, or after the effective date of this amendatory Act of 1989, it is and always has been the intention of the General Assembly (i) that the Omnibus Bond Acts are and always have been supplementary grants of power to issue instruments in accordance with the Omnibus Bond Acts, regardless of any provision of this Act that may appear to be or to have been more restrictive than those Acts, (ii) that the provisions of this Section are not a limitation on the supplementary authority granted by the Omnibus Bond Acts, and (iii) that instruments issued under this Section within the supplementary authority granted by the Omnibus Bond Acts are not invalid because of any provision of this Act that may appear to be or to have been more restrictive than those Acts.