NOT A TEACHER
Hi,
1. To the best of my knowledge, that is exactly correct. What a beautiful diagram! Thanks!
a. It shows the student where every word belongs.
2. When I first became a member, there was a teacher who used to regularly post Reed and Kellogg diagrams in the diagramming forum. I was among the members (and presumably guests) who found his analyses fascinating. I am so delighted that you are now considering its merits, for it forces one to parse each word.
a. In all fairness, however, many (most?) teachers feel that it is a waste of time and effort and that it does little to improve the English of learners. A few of us respectfully disagree.