The objectives of the research are to find out how the students’ writing quality differ after being given Google Classroom-mediated feedback, how different the students' writing quality according to the predominant dimension of writing anxiety they suffer from and How do the students give feedback on their friends’ writings. This study was carried out both quantitatively and qualitatively.The research design employed to find out the students’ writing quality after being given Google Classroom-mediated feedback and writing anxiety differences in writing quality on the implementation of Google Classroom-mediated feedback. The results showed that the implementation of Google Classroom-mediated feedback on ‘Write Art’ Google Classroom Group affected student’ writing quality positively.Based on the analysis of the students' feedback, it was found that the students presented positive, negative, and constructive feedback on their friends' writings.