Teaching writing through Instagram to improve students’ writing skill at the first grade of SMA Negeri 15 Bandar Lampung

The objectives of the research are to identify the improvements to students’ writing skill and to find which aspect has the most significant improvement. This research used a quantitative method and Repeated Measures T-test used to analyze the data. The instrument is a writing test that consists of pre-test and post-test. The result shows that students’ overall mean was 68.07 In the pre-test, while the mean of the post-test was 77.64. It means that there was an increase in students’ scores by 9.57 points. Moreover, the most improved aspect was grammar. The mean of this aspect in the post-test (18.6) was higher than the mean in the pre-test (15.4) with the gain of 3.2. It can be said that Instagram can be applied in teaching writing to improve writing skill.