In defense of the Mommy Track

The result of rejecting the Mommy Track for the past quarter-century has been an exodus of highly qualified mothers from the workplace for some period of time, a transition by many women into less-demanding career paths, and a dramatic decline in the trajectory of their earnings.
Here is what we know in 2015:
There is abundant research that shows having more women in the top leadership and governance positions of business and other professions correlates with higher performance for both the business and the economy. At the same time, there is widespread consternation on how to achieve this goal. Progress toward this end has been far slower than almost anyone imagined. In 1989, with women pouring out of the top business and law schools and already earning the majority of the nation's bachelor's degrees, it would have been almost impossible to imagine that a mere 5 percent of Fortune 500 companies would be headed by a women more than 25 years later.