School integration. Barnard School, Washington, D.C.

Photograph shows a line of African American and white school girls standing in a classroom while boys sit behind them, 1955.
Questions:
Describe the people, objects and activities you see in this photograph.
How can you tell this photograph was taken in the past? Give evidence from the photo to support your answer.
How are classrooms in the past different from classrooms today? How are they the same?