105 ILCS 5/32-2.10

In all special charter districts of this State having a population of not more than 50,000 lying wholly or in part within any city, village, or incorporated town, the school directors or members of the board of education, as provided in the special charter, shall be elected at elections held as provided by the general election law, and all propositions pertaining to said school districts required to be submitted to the voters thereof shall be voted upon at elections held as provided in the general election law.