2023 Washington Code 18.84.090 – Certification — Approval of schools and training

2022 Washington Code 18.84.090 – Certification–Approval of schools and training

2020 Washington Code 18.84.090 – Certification — Approval of schools and training

2019 Washington Code 18.84.090 – Certification — Approval of schools and training

2018 Washington Code 18.84.090 – Certification — Approval of schools and training

2016 Washington Code 18.84.090 – Certification–Approval of schools and training

2015 Washington Code 18.84.090 – Certification–Approval of schools and training

2014 Washington Code 18.84.090 – Certification — Approval of schools and training

2013 Washington Code 18.84.090 – Certification — Approval of schools and training

2009 Washington Code 18.84.090 – Certification — Approval of schools and training