Everyday Editing by Jeff Anderson -- Highly recommended. Anderson provides us with complete series of lessons to cover various aspects of punctuation and grammar.
Image Grammar by Harry R. Noden --
Sentence Composing for Elementary School by Don and Jenny Killgallon (use for middle school)
Sentence Composing for Middle School by Donald Killgallon (use for high school)
The Killgallons have collected sentences from published literature to be used for sentence unscrambling, imitating, combining, etc. Students learn to recognize that sentences are made up of chunks of meaning. The elementary text teaches students to recognize and use phrases and clauses. The middle school text deals more with writing complete sentences, a variety of sentences, and expanding sentences, and writing paragraphs.
Study Driven by Katie Wood Ray -- Finding mentor texts and using them in writing workshops.
Also recommended: The 9 Rights of Every Writer: A Guide for Teachers by Vicki Spandel
