ABSTRACT
Teacher’s written feedback can not be avoided in students’ writing to aid the students who were facing some problems creating their papers. It is also seen as the most important tasks for the teachers by providing feedback for the students. This study, aimed to prove the effectiveness of the feedback for students’ writing given by their teacher. The focus of the study is to reveal the effectiveness of teacher feedback for Guided writing class students. This study used three different methods to measure the effectiveness of teacher feedback, feedback on grammar only, feedback on content only and feedback on both grammar & content. The data were collected from the pre-test and post-test. The result showed that teacher’s feedback is effective for the students in creating their paper. The feedback give them awarness of their strength and weakness in their writing and also motivate them to create a better paper. At last, teacher’s feedback is needed for the students as the guidance in the process of writing. I recommend other researchers to gather more data to make the data more valid in order to prove the effectiveness of teacher feedback on students writing.