Iowa Code § 297.9
The board of directors of any school district may authorize the use of any schoolhouse and its grounds within such district for the purpose of meetings of granges, lodges, agricultural societies, and similar societies, for parent-teacher associations, for community recreational activities, community education programs, election purposes, other meetings of public interest, public forums and similar community purposes; provided that such use shall in no way interfere with school activities; such use to be for such compensation and upon such terms and conditions as may be fixed by said board for the proper protection of the schoolhouse and the property belonging therein, including that of pupils, except that in the case of community education programs, any compensation necessary for programs provided specifically by community education and not those provided through community education by other agencies or organizations shall be compensated from the funding provided for community education programs.
Iowa Code § 297.9
Schoolhouses as polling places, §49.24
Use by county conservation board, §350.8