My thoughts on what the 2018 district layout will look like based on the last 5 years.
District 1
Dowling
Ankeny
Southeast Polk
Fort Dodge
Des Moines Lincoln
CB Thomas Jefferson
Sioux City North
District 2
Valley
Johnston
Ames
Indianola
Des Moines Hoover
Des Moines Roosevelt
Sioux City West
District 3
Waukee
Ankeny Centennial
Urbandale
Sioux City East
Des Moines East
CB Abraham Lincoln
Des Moines North
District 4
Bettendorf
CR Kennedy
CR Prairie
Dubuque Senior
Linn-Mar
Mason City
Marshalltown
District 5
CR Washington
Pleasant Valley
Iowa City High
Waterloo West
CR Jefferson
Burlington
Davenport North
District 6
Cedar Falls
Iowa City West
Dubuque Hempstead
Muscatine
Davenport Central
Ottumwa
Davenport West
District 1
Dowling
Ankeny
Southeast Polk
Fort Dodge
Des Moines Lincoln
CB Thomas Jefferson
Sioux City North
District 2
Valley
Johnston
Ames
Indianola
Des Moines Hoover
Des Moines Roosevelt
Sioux City West
District 3
Waukee
Ankeny Centennial
Urbandale
Sioux City East
Des Moines East
CB Abraham Lincoln
Des Moines North
District 4
Bettendorf
CR Kennedy
CR Prairie
Dubuque Senior
Linn-Mar
Mason City
Marshalltown
District 5
CR Washington
Pleasant Valley
Iowa City High
Waterloo West
CR Jefferson
Burlington
Davenport North
District 6
Cedar Falls
Iowa City West
Dubuque Hempstead
Muscatine
Davenport Central
Ottumwa
Davenport West