Iowa Code
Chapter 39 - ELECTIONS, ELECTORS, APPOINTMENTS, TERMS, AND OFFICERS
Section 39.24 - School officers.

39.24 School officers.
Members of boards of directors of community and independent school districts, and boards of directors of merged areas shall be elected at the school election. Their terms of office shall be four years, except as otherwise provided by section 260C.11, 260C.13, 275.23A, 275.37, or 275.37A.
[C75, 77, 79, 81, §39.24]
83 Acts, ch 77, §1; 2008 Acts, ch 1115, §1, 21
School corporation board of directors, §274.7