Do you think the same teacher should be paid the same in rural WV as an affluent suburb of Pittsburgh? Like you said not a level playing field. You cannot even compare a teacher salary in Morgantown to a rural area of WV, cost of living difference is very wide within our own state, let alone the bordering ones.
I never stated the salaries should be identical. If you were actually following the discussion, you would have seen that I used that example to explain how a merit-based evaluation system would be flawed. The same teacher, working during different time periods in two distinctly different areas of the country, could have vastly different results in their students’ academic achievement due to factors completely out of their control.