In this research study, unlike previous studies that have examined the advantages of peer review for low proficiency students, uses a longitudinal action mixed methods design is used to explore the impact of peer review on the academic writing of students with low English proficiency. The format was a longitudinal action study, which analyzed the written peer review feedback, essays, and reflections of 40 learners. Results showed that at the beginning of the study, the students experienced challenges in identifying problems with rhetorical content of their peers and by the end of 11 weeks, they were able to provide succinct peer feedback that included examples and explanations of classmates' grammatical and rhetorical errors. Results also showed improvement in their own writing skills. Implications for implementing peer review in foreign language writing contexts are discussed.