Teacher shortages are real, but not for the reason you heard

BIRMINGHAM, Ala. (AP) — Everywhere, it seems, back-to-school has been shadowed by worries of a teacher shortage.The U.S. education secretary has called for investment to keep teachers from quitting. A teachers union leader has described it as a five-alarm emergency. News coverage has warned of a crisis in teaching. The Exit: Teachers leave, students sufferIn reality, there is little evidence to suggest teacher turnover has increased nationwide or educators are leaving in droves.C