This is quite interesting. An Urban Institute study shows that first year teachers making $30K are more effective than experienced teachers making $80K. Philip Greenspun makes the interesting observation from his college teaching experience that the experience is mostly negated if you don’t have the ability to alter the curriculum. Public school teachers have little or no ability to alter the curriculum.
There is however, a class of “teacher” with the ability to alter the curriculum on a whim, daily if desired, to the point of doing away with curriculum entirely
Philip makes a very good point though. If the study is indeed valid, we could improve educational results and reduce costs at the same time by skewering the pay scale to attract more first year teachers. Say make the starting salary $50K per year, and then don’t raise it with seniority. You’ll attract more young teachers, and if they burn out in 5 years, who cares? As long as you can keep attracting new teachers all will be fine.