According to the National Gallery of Art, where this watercolor resides, scholars were long perplexed about the shapes on the blackboard, whose corner holds Homer's signature in "chalk." Art historians have since discovered that the shapes signify that the young woman is teaching "drawing," which was considered a necessity for children, since it enabled industrial design and construction of buildings and presumably also furniture.Share
The composition echoes the shapes on the blackboard in the angularity of the teacher's apron and the checks of the gingham, the stacked rectangles of the background, the symmetrical placement of the blackboard and teacher, and the slate monochrome of the entire painting. The one contrast is the teacher's fresh and very young face. In fact, so young does her expression seem that if she were not holding the pointer, we would think she was a student.