Today's students will earn 8% less (but won't know how much that is)

"American 15-year-olds are 34th in the world in math." - Joanne Jacobs
The decline in reading and math achievement since 2013 means today's students will earn 8 percent less over a working lifetime, estimates economist Eric Hanushek in a Washington Post op-ed.

• "Past evidence shows clearly that people who know more earn more," he writes. And those who know less earn less. 
• His Stanford research predicts long-term economic impacts for young Americans and for the economy as a whole...