The Ohio Education Research Center (OERC) recently reported the teacher evaluation results from 2013–14, the first year of widespread implementation of the state’s new evaluation policy. The report should serve as an early warning sign while also raising a host of thorny questions about how those evaluations are being conducted in the field.
The study’s main finding is that the overwhelming majority of Ohio teachers received high ratings. In fact, a remarkable 90 percent of teachers were rated “skilled” or “accomplished”—the two highest ratings. By contrast, a mere 1 percent of Buckeye teachers were rated “ineffective”—the lowest of the four possible ratings. These results are implausible; teaching is like other occupations, and worker productivity should vary widely. Yet Ohio’s teacher evaluation system shows little variation between teachers. It’s also evident that the evaluation is quite lenient on teacher performance. But there’s more. Let’s take a look at a few other data points reported by OERC that merit discussion.
1. Most teachers are not part of the value-added system
Given the controversy around value added in teacher evaluation, it may surprise you that most Buckeye teachers don’t receive an evaluation based on value-added results. (Value added refers...