Collaborative writing involves developing instructional arrangements whereby adolescents work together to plan, draft, revise, and edit their compositions. It shows a strong impact on improving the quality of students’ writing. (p. 16)
Graham, S., & Perin, D. (2007). Writing next: Effective strategies to improve writing of adolescents in middle and high schools –A report to Carnegie Corporation of NewYork.Washington,DC:Alliance for Excellent Education.