Versions of Washington Code 28A.300.473 - Medical use of cannabis-infused products -- Suspension of policies that authorize student use on school grounds on LawServer 2023 Washington Code 28A.300.473 – Medical use of cannabis-infused products — Suspension of policies that authorize student use on school grounds 2022 Washington Code 28A.300.473 – Medical use of cannabis-infused products–Suspension of policies that authorize student use on school grounds 2020 Washington Code 28A.300.473 – Medical use of marijuana-infused products — Suspension of policies that authorize student use on school grounds 2019 Washington Code 28A.300.473 – Medical use of marijuana-infused products — Suspension of policies that authorize student use on school grounds