Judy Woodruff:

There are more than one million children whose parents are on active military duty in the U.S., most of whom attend public schools. They average six to nine moves before the end of high school.

It's also common to have a parent gone for long periods of time. Some schools don't know who these children are or how to support them, but that is starting to change.

Kavitha Cardoza with our partner Education Week has our weekly segment Making the Grade.