Very often students with high grades hit secondary school and find themselves ill-prepared for high school writing. I have had good success with helping first and second year high school students to approach essay-writing systematically.
I do not come to the work of teaching with any particular methodology. I come armed with a love for the writing process, clarity, and for the beauty of a well-made sentence.
I also work with middle school students in reading, writing and language arts--with elementary students in all areas, particularly in the area of homework help, and I do workshops for small groups of children interested in creative writing and self-publishing.