70 ILCS 605/8-14

Annexing lands to and detaching lands from subdistricts and minor subdistricts.

Lands may be annexed to or detached from subdistricts or minor subdistricts in the same manner and with the same effect as is hereinbefore provided for the annexation of lands to and the detachment of lands from main districts. When land is annexed to a main district, it may, in the same proceeding and without a separate petition or a separate hearing, be annexed to a subdistrict or a minor subdistrict. When land is detached from a main district, it shall, in the same proceeding and without a separate petition or a separate hearing, be detached from any subdistrict or minor subdistrict in which such detached land is situated.