2023 Washington Code 54.04.180 – Collective bargaining authorized for districts

2022 Washington Code 54.04.180 – Collective bargaining authorized for districts

2020 Washington Code 54.04.180 – Collective bargaining authorized for districts

2019 Washington Code 54.04.180

2018 Washington Code 54.04.180 – Collective bargaining authorized for districts

2016 Washington Code 54.04.180 – Collective bargaining authorized for districts

2015 Washington Code 54.04.180 – Collective bargaining authorized for districts

2014 Washington Code 54.04.180 – Collective bargaining authorized for districts

2013 Washington Code 54.04.180 – Collective bargaining authorized for districts

2009 Washington Code 54.04.180 – Collective bargaining authorized for districts