NOT A TEACHER
Hello, Likea:
I was very excited by your question, for I agree with the American poet Gertrude Stein: "I really do not know that anything has ever been more exciting than diagramming sentences."
1. At American universities, if you take linguistics classes, you learn to draw tree diagrams.
2. In American secondary schools, there is almost no more diagramming, for the younger teachers do not know it, and the students do not want it.
a. Until World War II, many American secondary schools tried (tried!) to teach the Reed-Kellogg system of diagramming.
b. Gradually, however, most secondary schools stopped trying to teach it, for the students found it BORING and many teachers came to believe that it did NO good.
c. I absolutely LOVE the Reed-Kellogg system, for it forces you to account for every part of speech in a sentence.
d. I absolutely believe that foreign students of English should be taught the Reed-Kellogg system, but I realize that almost no one nowadays agrees with me.
e. I strongly urge you to consider learning this system. You may love it so much that you decide to teach it to your students. And I believe some (many?) of your highly motivated students will be forever grateful to you.
f. There is a website called German - Latin - English. It will teach you how to diagram Reed-Kellogg diagrams. (Messrs. Reed and Kellogg are credited with perfecting this system. I think that university linguistics students laugh at this system as being childish as compared with tree diagrams. I believe, however, that Reed-Kellogg is more suited to secondary students than are tree diagrams.)
If you get a chance to visit that website, please let us know what you think of Reed-Kellogg.
P.S. If you check out some of the older posts in this "Diagramming" forum, you will find many examples of Reed-Kellogg. Until a few years ago, a gentleman regularly posted Reed-Kellogg diagrams in this particular forum. Many of us miss him very much.