50% of teachers quit within five years

Sploid reports:

No matter how much tax money is thrown at U.S. public schools, teachers have been dropping out at the same rate for decades.

And while only half of America's public-school students are still white kids, teachers are still dominated by the same middle-aged women who have always been teachers - and 90% of them are white.

What Sploid forgets is a lot jobs have even bigger turnover.