105 ILCS 5/7-10

Within 30 days after the boundaries of any school district have been changed, the regional superintendent of schools shall make and file with the county clerk or clerks a map of any detaching, dissolving, or annexing school districts, whereupon the county clerks shall extend taxes against the territory in accordance therewith; provided that if an action to review such decision under Section 7-7 of this Code is taken, the regional superintendent of schools shall not file the map with the county clerk until after he or she is served with a certified copy of the order of the final disposition of such review.