105 ILCS 5/34-21.10

(a) For purposes of the election of Chicago Board of Education members under subsection (b-15) of Section 34-3, the General Assembly shall subdivide the City of Chicago into 10 electoral districts for the 2024 general election, and it shall divide each of those districts into 2 subdistricts. The subdistricts must be drawn on or before April 1, 2024 and must be compact, contiguous, and substantially equal in population and consistent with the Illinois Voting Rights Act. (b) In the year following each decennial census, the General Assembly shall redistrict the subdistricts to reflect the results of the decennial census consistent with the requirements in subsection (a). The reapportionment plan shall be completed and formally approved by the General Assembly not less than 90 days before the last date established by law for the filing of nominating petitions for the second school board election after the decennial census year. If by reapportionment a member of the Board no longer resides within the subdistrict from which the member was elected, the member shall continue to serve in office until the expiration of the member's regular term. All new members shall be elected from the subdistricts as reapportioned.