 Teacher turnover is actually the silent source of teacher shortages, which many of us have been experiencing all across the country. Districts and schools have been continuing to struggle to meet the growing demand for qualified teachers. Since about 2012, when the layoffs that had been common during the recession ended, the teacher workforce has grown by about 400,000 teachers. And districts have been seeking to reclaim the positions that they had previously cut during the recession and replace the teachers who have left. And they're kind of trying to climb this hill every year and replace those who leave through the leaky bucket. But even with intensive recruiting inside and outside of the country, you've seen news reports about that. More than 100,000 classrooms are being staffed this year by instructors who are unqualified for their jobs.