Once a popular way to teach grammar, the practice of diagramming sentences has fallen out of favor.

Lucy Ferriss accepts Slate’s challenge to diagram a sentence uttered by the Donald — and is surprised by what she learns.

When I was an eighth-grader I found diagramming to be fun, much like working a crossword puzzle. Coincidentally, the same edition of The Post featured a letter from a high school football coach ...

There are plenty of people out there—not only English teachers but also amateur language buffs like me—who believe that diagramming a sentence provides insight into the mind of its perpetrator ...

You can read McCotter's full statement about resigning on his Facebook page. Your challenge is to diagram just this one McCotter sentence: ...

If you weren't taught to diagram a sentence, this might sound a little zany. But the practice has a long -- and controversial -- history in U.S. schools.