What writing strategies work with students of different abilities?

Hi everyone,
Here are some guidelines that I found during the course of my readings that are very useful for teaching writing to students with different abilities:
(1.) Provide frequent opportunities for students to write, read and reflect.
(2.)Help students discover the relationship between oral and written language.
(3.)Vary the instruction and management of writing workshops.
(4.) Emphasize fluency and quality of ideas before correctness.In other words, we need to model appropriate ways for students to respond to each other's writing.
(5.) Encourage all students to display, present and publish their writing.
(6.) Evaluate writing process as well as progress.
(7.) Appreciate the diversity of students in the classroom.