105 ILCS 5/6-1

Each congressional township is a township for school purposes. When a fractional congressional township contains fewer than 200 persons under 21 years of age and has not heretofore been united with any township for school purposes it is hereby attached for school purposes to the adjacent congressional township having the longest territorial line bordering on such fractional township and all the provisions of this Article shall apply to such united townships the same as though they were one township.