Teaching writing is not only about teaching a skill that students need to mechanically master through a set of predefined and timed assignments, it is most importantly about teaching a passion, a love for writing. Students need to love writing before they engage in its intricacies. The mechanics of writing ( style, grammar, punctuation..etc) will eventually develop as students passion for writing evolves and grows.
I have had the chance in my MA Ed to have a course called struggling writers in which I got to study several approaches to teaching writing but not one of them was as successful as the one that advocates teaching writing as a situated act. In situated writing students get to write about their own experiences in real life and share them with their peers, they get to express themselves through writing . The writing workshop is one way to do it. I wont get into details in thisbecause it is beyond the scope of this short post but I can provide whoever interested in this topic with more reading resources ( contact me at firstname.lastname@example.org ).
The skill of writing is to create a context in which other people can think
Writing like life itself is a voyage of discovery
All good writing is swimming under water and holding your breath
Words are of course the most powerful thing used by mankind
The beautiful part of writing is that you don't have to get it right first time, unlike say, brain surgery
Writing is putting one's obsessions in order