Here's the link to the website for the Measures of Effective Teaching project: http://metproject.org/.  The measures of effective teaching project compared a variety of instruments for guaging teacher quality and effectiveness. Some are probably coming to a teacher evaluation plan near you. According to the website:

Two-thirds of American teachers feel that current evaluations don't accurately capture the full picture of what they do in the classroom. And without meaningful feedback, improving as a teacher can be like learning to play the piano by yourself or learning to play basketball without a coach: It's very tough to get better and to become great without knowing what you're doing right.

The Measures of Effective Teaching (MET) Project is designed to find out the best way to give teachers the information and support they want. The project has brought together 3,000 teacher volunteers in six different school districts with dozens of education experts and researchers. MET's goal is to find out how evaluation methods can best be used to tell teachers more about the skills that make them most effective and to help districts identify great teaching.

The MET project is already providing practical insights and tools that benefit teachers and students in classrooms today. These insights are being shared widely with the hope that they can offer support for school districts that are creating and designing their own evaluation systems.