Selecting and remembering the necessary information from rapidly increasing information requires summarization skills. Research on improving students' summarization skills has focused on deletion, generalization, and reconstruction strategies. However, direct teaching of these strategies does not yield successful results. For this reason, researchers have turned to teaching summarization based on understanding the text. Knowing the macrostructure and superstructure of the text can help understand the text and select the information to be included in the summary. The aim of this study is to determine the effect of macrostructure and superstructure teaching on summary writing achievement. The study was conducted in a one-group pretest-posttest design and lasted for 6 weeks. The study was conducted with 22 seventh grade students in a public secondary school. The data were collected with a total of 132 summary texts in which students summarized five stories. The summaries of texts were scored with the Text Summary Evaluation Rubric (TSER). As a result of the study, significant differences were obtained in summarization achievement in favor of the posttest. Based on this result, it is recommended that macrostructure and superstructure teaching be included in programs and course books. This study is limited to narrative texts. In future studies, whether the achievement in summarization narrative and informative texts differs and how long it takes for different age groups to develop their achievement in summarization of different types of texts can be examined based on text structure teaching.