<![CDATA[Writing skills is the one of four basic skill that need to master for anyone who want to study about English properly especially for high school students. People need to learn English if they want make contact with people outside of the country, they need to understand four basic skills of English and that including writing skills. This research aimed to analyze the writing skill materials presented in the eleventh-grade English textbook implemented under the 2013 Curriculum (K13). This study focused on conducting an in depth analysis of the writing assessments found in the eleventh-grade textbook. The analysis was carried out using qualitative method, concentrating primarily on the content of the textbook. This study is expected to serve as a valuable reference for the proper implementation of the K13 curriculum, especially for senior high school English teachers. The results showed that all the materials in the textbook have a clear social function, informing readers about the general purpose of each topic. Additionally, the textbook provides distinguishing characteristics for each type of written material discussed.]]>
