105 ILCS 540/1

In any case where before the effective date of this Act a new district was created or the boundaries of any school district was changed by the annexation or detachment of territory or by the dissolution of a district and its annexation to another district, the creation, annexation, detachment or dissolution is valid despite the fact that an election was not held on the proposition of retaining the existing bonded indebtedness of such districts in any or all of such districts involved.