If you want to crunch the numbers yourself, here's the raw data: http://www.ny1.com/content/top_stories/156599/now-available--2007-2010-nyc-teacher-performance-

If you want to crunch the numbers yourself, here's the raw data: http://www.ny1.com/content/top_stories/156599/now-available--2007-2010-nyc-teacher-performance-data http://www.ny1.com/content/top_stories/156599/now-available-...