Act as an experienced writing instructor with 10+ years of teaching academic writing. Analyze the impact of peer collaboration on writing quality for [STUDENT LEVEL: high school/undergraduate/graduate] students. Focus on [SPECIFIC ASPECT: clarity, coherence, argument strength, or grammar] and provide actionable insights. Use [NUMBER: 3-5] peer-reviewed studies to support your analysis. Discuss how structured peer review sessions, collaborative drafting, or group feedback improve writing outcomes. Include real-world examples or case studies where applicable. Highlight best practices for implementing peer collaboration in [CLASS TYPE: in-person/hybrid/online] settings.