As used in this subchapter:
(1) “Adult” means a person age sixteen (16) years or older and approved by the parent;
(2) “Door-to-door sales” means the selling of merchandise outside of the child's home and off the school grounds;
(3) “Elementary school student” means a child in kindergarten through grade six (K-6);
(4) “Fund-raising companies” means businesses, including mail order companies, that assist schools in raising funds in return for a share of all money taken in;
(5) “Parent” means a parent or legal guardian; and
(6) “School” means a school or school-sponsored organization such as a parent-teacher association (PTA) or booster club.