Mo. Rev. Stat. § 162.1042: Definitions.

As used in sections 162.1040 to 162.1059, the following terms mean:

(1) "Department" , the department of elementary and secondary education;

(2) "Enrollment option districts" , districts, the school boards of which have by resolution entered into an enrollment plan;

(3) "Enrollment option plan" , a plan whereby two school districts establish a cooperative agreement to send or receive or send and receive each other's students, subject to the limitations of this section;

(4) "Parent" , the parent, guardian or other person having charge, control or custody of an elementary or secondary school student;

(5) "Student" , a student enrolled in an enrollment option district.