Why America's campuses are going gray By: CNBC.com News August 28, 2014 at 11:54 AM EDT Kids and teens have company heading back to school: More adults over age 35 are returning to the classroom. Here's why, and how to pay for older ed. Read More >> Related Stocks: ML DEPOSITOR PREFERREDPLUS 8.375 CITIZENS COMMUN CERT. CZN-1 PNC Financial Services