http://www.aft.org/sites/default/files/worklifesurveyresults2015.pdf

After concerns of stress on the job were reported to the Badass Teachers Association, a survey on well-being, working conditions and stressors for educators was designed by a group of teachers who are members of the American Federation of Teachers or BATs, and it was reviewed and refined by a workplace stress expert and a professional pollster. Circulated via email and social media, the survey was posted online on April 21 and closed on May 1. The first of its kind, the 80-question survey was filled out by more than 30,000 educators.