High Trestle Chapter
Counties: Hamilton, Hardin, Boone, Story
Polk Co. Schools: Madrid, Balard, Collins Maxwell, North Polk, Ankeny
Prairie Crossing Chapter
Counties: Marshall, Tama, Jasper, Poweshiek
Polk Co. Schools: Bondurant-Farrar, Saydel, Southeast Polk, PCM
Iron Horse Chapter
Counties: Marion, Mahaska, Keokuk, Lucus, Monroe, Wapello, Jefferson, Wayne, Appanoose, Davis, Van Buren
Rolling Hills Chapter
Counties: Madison, Warren, Clarke, Decatur
Polk Co. Schools: Des Moines Independent, Carlisle
Heritage River Chapter
Counties: Greene, Guthrie, Dallas
Polk Co. Schools: Woodward-Granger, Dallas Center-Grimes, Johnston, Urbandale, West Des Moines