2023 Washington Code 28A.150.410 – Basic education certificated instructional staff — Salary allocation methodology — Adjustments for regional differences — Review and rebasing of regionalization factors

2022 Washington Code 28A.150.410 – Basic education certificated instructional staff–Salary allocation methodology–Adjustments for regional differences–Review and rebasing of regionalization factors

2020 Washington Code 28A.150.410 – Basic education certificated instructional staff — Salary allocation methodology — Adjustments for regional differences — Review and rebasing of regionalization factors

2019 Washington Code 28A.150.410 – Basic education certificated instructional staff — Salary allocation methodology — Adjustments for regional differences — Review and rebasing of regionalization factors

2018 Washington Code 28A.150.410 – Basic education certificated instructional staff — Salary allocation methodology — Adjustments for regional differences — Review and rebasing of regionalization factors

2016 Washington Code 28A.150.410 – Basic education certificated instructional staff–Salary allocation schedule–Limits on postgraduate credits

2015 Washington Code 28A.150.410 – Basic education certificated instructional staff–Salary allocation schedule–Limits on postgraduate credits

2014 Washington Code 28A.150.410 – Basic education certificated instructional staff — Salary allocation schedule — Limits on postgraduate credits

2013 Washington Code 28A.150.410 – Basic education certificated instructional staff — Salary allocation schedule — Limits on postgraduate credits

2009 Washington Code 28A.150.410 – Basic education certificated instructional staff — Salary allocation schedule — Limits on postgraduate credits