Section 105 ILCS 5/7-2.3 - Annexation to special charter district(a) Notwithstanding any provision to the contrary contained in any special act or special charter of any school district, annexation of territory to any city or village under the Illinois Municipal Code after the effective date of this amendatory Act of 1967 does not constitute annexation of the territory to the special charter school district nor detachment from any school district adjacent to the special charter district. Except as otherwise provided in subsection (b) of this Section, the boundaries of a special charter district may be changed as provided in Sections 7-2.4 through 7-2.7.(b) If all or any part of a special charter school district is located in a special charter city, then upon the filing with the governing body of the special charter school district of a petition to detach the territory described in the petition from the school district of which that territory forms a part and to annex that territory to the special charter school district, the territory described in the petition shall be deemed to be so detached and annexed to the special charter school district by operation of law, if all of the following conditions are met: (i) the petition is signed by at least 51% of the owners of record and 51% of the electors, if any, residing in the territory described in the petition; and (ii) the territory described in the petition is located in the special charter city, is contiguous to the special charter school district, and does not include any commercially zoned properties that are contiguous to each other and together constitute in excess of 100 acres of land and are not separated by a State highway and that are used solely for office/research and hotel purposes. A certified copy of the petition and the resolution or order of the governing body of the special charter school district evidencing the annexation of the territory described in the petition to the special charter school district by operation of law shall be mailed by that governing body to each school district affected and to the regional board or boards of school trustees for the educational service region or regions in which the affected school districts are located. A person who is a resident of any territory described in the petition at the time of its detachment from one school district and its annexation to a special charter school district under this subsection, and whose child or children are then attending school in the district from which that territory is being detached, may elect to have that child or those children and their siblings attend the schools of the district from which the territory is being detached. However, in that event the special charter school district shall pay tuition in the amount provided by law to the school district from which the territory is detached for each of those children and siblings who attend the schools of that district.P.A. 89-494, eff. 6/21/1996.