As the first state to adopt the Common Core, Kentucky has managed a remarkably smooth and successful transition. After four years, test scores are improving and the high school graduation rate is up 87 percent, beating the national average. But success didn’t happen overnight. “It takes about five years for teachers to make the shift and for kids to catch up. We’re just starting to see the gains from higher standards,” said Terry Holliday, Kentucky’s education commissioner.

Source: The Wall Street Journal