Putting a price on the value of good teachers.  The debate over testing in schools and whether student scores accurately reflect the teachers' performance has been raging for well over a decade.  Now a new study has tracked more than 2.5 million students over two decades.  What did the study find?

Watch the video and leave your thoughts on this study.

You may see a commercial first from the content source but the video provides a good concise overview of the study.  If the video below does not load, you can click here to view the video.