Judy Woodruff:

But first: a pair of stories in Baltimore, and the serious problems residents face with some civic institutions.

Schools in Maryland's biggest city close occasionally due to winter weather, but the problems in Baltimore public schools this season have highlighted much bigger questions.

Outrage erupted last month after students found themselves in frigid classrooms when heating systems failed in at least 60 schools. It's opened up a larger debate about funding and fixing them.

John Yang has both of our reports tonight, beginning with our weekly segment, Making the Grade.