When I was investigating US writing curricula, I found that some of them include a lot of sentence diagramming, starting around 4th grade or so. I had never heard of sentence diagramming, never mind done any myself in school. I asked around and was told that three moms with older children had just crossed out those exercises in their writing/language arts curriculum. I am fine with crossing out something that isn’t useful for us to do (I’m not going to get my children to do busywork) but first I wanted to know why it was there, and how it might affect things later. What is sentence diagramming? Sentence diagramming, also…