One skill that student teachers need to develop during their academic studies is the capacity to produce accurate and well-organized texts. This study reports on the comparative impact of metalinguistic feedback (MLF), teacher interactive feedback (TIF(, and the peer-feedback (PF) on the accuracy and organization of postgraduate ELT student teachers’ writing. The participants were 57 postgraduate students who were recruited from a population of 70 postgraduate students, in three classes, that were randomly assigned as the MLF group, the TIF group, and the PF group based on the focus of the presentation and the feedback type they would receive during the 14 session treatment. A hybrid process-oriented and genre-based methodology was employed to teach the identical teaching materials to all the groups with a focus on grammatical features and relevant grammatical exercises in the MLF group, on reflective and interactive negotiation of form and meaning in the TIF group, and on individual peer-assessment of the peer’s writing in the PF group. The results revealed significantly higher levels of accuracy among the MLF group with no significant difference in the organization of the groups’ writing. The findings underscore the role of MLF in enhancing accuracy.