Two charts, courtesy of Cato's Andrew J. Coulson, prepared from publicly available data:

And here's President Obama's response to these facts, from a press release this week:

WASHINGTON, D.C. – Today, President Barack Obama announced a new goal of recruiting 10,000 Science, Technology, Engineering, and Math (STEM) teachers over the next two years.  This announcement will move the country forward on the Obama Administration’s ambitious goal of preparing 100,000 STEM teachers over the next decade.

Ok, maybe Obama knows that we already have way more teachers and administrators than we know what to do with, but also knows that we need better ones. That could be what this is about, right? Secretary of Education Arne Duncan clarified that, unlike the bazillion ineffective teachers we already have, these new 10,000 teachers will totally be different and awesome, because we are going to get them from Facebook.

Read lots more about America's always-impending teacherpocalypse.