(1) School district personnel are prohibited from requiring parents to obtain a prescription for the following substances as a condition of a student attending school, participating in school district sponsored activities, receiving an evaluation, or receiving special education services:

(a) Substances identified under Schedules I, II, III, IV, or V in section 202(c) of the Controlled Substances Act (21 U.S.C. Sec. 812(c));

(b) Substances identified under Schedules I, II, III, IV, or V of the Uniform Controlled Substances Act (chapter 69.50 RCW); and

(c) Any legend drug as defined by RCW 69.41.010, unless otherwise required under RCW 28A.210.320.

(2) Nothing in subsection (1) of this section shall be construed to create a federal prohibition against teachers and other school personnel consulting or sharing classroom-based observations with parents or guardians regarding a student's academic and functional performance, or behavior in the classroom or school, or regarding the need for evaluation for special education or related services.