Iowa Code § 275.27
School districts created or enlarged under this chapter are community school districts and are part of the area education agency in which the greatest number of registered voters of the district reside at the time of the special election called for in section 275.18, and sections of the Code applicable to public or accredited nonpublic schools generally are applicable to these districts in addition to the powers and privileges conferred by this chapter. If a school district, created or enlarged under this chapter and assigned to an area education agency under this section, can demonstrate that students in the district were utilizing a service or program prior to the formation of the new or enlarged district that is unavailable from the area education agency to which the new or enlarged district is assigned, the district may be reassigned to the area education agency which formerly provided the service or program, upon an affirmative majority vote of the boards of the affected area education agencies to permit the change.
Iowa Code § 275.27