This can't be good news

From the Economic Policy Institute:

In 2006, public school teachers earned 15.1% lower weekly earnings than other employees with comparable education credentials and experience earned. In 1996, this wage disadvantage was only 4.3% (see Chart). Although the wage disadvantage for both male and female teachers has grown substantially over the last 10 years, in 2006 the gap was far larger among males (25.5%) than females (10.5%).