FAIRFIELD, Conn.—When Maurice Johnson was laid off a year ago from his six-figure salary as a managing director at GE Capital, it wasn't his future he was worried about.

It was his children's.

The family income of the Johnsons is a fifth of what it used to be. And the children are about to feel the pain. Mr. Johnson's two oldest are attending his alma mater, Johns Hopkins University, at an annual cost of $50,000 apiece. And his youngest daughter, 15 years old, recently began her own college search. Mr. Johnson isn't sure whether he'll be able to help her to go to college, or even to get the older kids to graduation.

Mr. Johnson, who watched his own father struggle as an engineer without a college degree, was determined to do better for his own children.

"We saved like crazy from the minute they were born," he says. "Then, it all fell to pieces."