The aim of this study is to analyze the renewed curricular acquisitions of Secondary Education Turkish Language and Literature lesson and applicability of these acquisitions with regards to the $21^{st}$ century skills. In line with the purpose of the study, the texts and activities available in the 9th grade course-book of Secondary Education Turkish Language and Literature lesson as well as teacher and student opinions were examined. The study was designed with the case study method among the qualitative research methods. While there were various acquisitions related to information literacy and critical thinking skill in $9^{th}$ grade Turkish Language and Literature Curriculum, there were no acquisitions related to creativity and renewal, social and intercultural skills, media literacy, leadership and responsibility skills. While the course-books had several activities related to information literacy, they had no texts related to media literacy, productivity and accountability, communication and collaboration, entrepreneurship and self-orientation, leadership and responsibility skills. It was concluded that teachers did not have sufficient knowledge about the curriculum, and they were unable to reflect their knowledge fully in the education process. The students had insufficient knowledge about creativity and renewal, critical thinking and problem solving, productivity and accountability, leadership and responsibility, social and intercultural skills, information and communication technologies literacies; and they were unable to establish a correlation between these skills and Turkish Language and Literature lesson.