Iowa Code § 808A.1
As used in this chapter, unless the context otherwise requires:
1. “Protected student area” includes, but is not limited to:
5. “Student search rule” means a rule established by the school board of a public school, pursuant to section 279.8 or 279.9, or the authorities in charge of a nonpublic school controlling the manner of the searching of students or protected student areas and school lockers, desks, and other facilities or spaces owned by the school. A student search rule, to be valid for purposes of this chapter, shall require that all searches of students or protected student areas be reasonably related in scope to the circumstances which gave rise to the need for the search and based upon consideration of relevant factors which include, but are not limited to, the following:
86 Acts, ch 1129, §1; 89 Acts, ch 265, §40; 95 Acts, ch 191, §55; 97 Acts, ch 84, §1, 2