Minn. Stat. § 121A.222: POSSESSION AND USE OF NONPRESCRIPTION PAIN RELIEVERS BY SECONDARY STUDENTS.

A secondary student may possess and use nonprescription pain relief in a manner consistent with the labeling, if the district has received a written authorization from the student's parent or guardian permitting the student to self-administer the medication. The parent or guardian must submit written authorization for the student to self-administer the medication each school year. The district may revoke a student's privilege to possess and use nonprescription pain relievers if the district determines that the student is abusing the privilege. This section does not apply to the possession or use of any drug or product containing ephedrine or pseudoephedrine as its sole active ingredient or as one of its active ingredients.