Politeness is one of the important aspects in the development of students’ character. However, some students still demonstrate impolite behavior, such as using inappropriate words when speaking to peers and even teachers, teasing friends, paying insufficient attention to speaking etiquette, and not wearing complete school attributes according to school regulations. Therefore, this study employed group guidance services using a modeling technique based on local culture, aiming to determine the level of politeness of fifth-grade students at SD Negeri 1 Pagentan before receiving group guidance services using a modeling technique based on local culture and to determine the improvement in students’ politeness after receiving the service. This study employed a quantitative approach with a pre-experimental method using a one-group pretest-posttest design. The subjects were 17 fifth-grade students. Data were collected using a politeness questionnaire. The results showed that students’ politeness levels before receiving the group guidance service varied, with 4 students in the high category, 9 students in the moderate category, and 4 students in the low category. The normality test showed that the pretest and posttest data were normally distributed. The paired sample t-test showed a significance value (2-tailed) of 0.000 < 0.05, indicating a difference in students’ politeness levels before and after receiving the service. In addition, the N-Gain test showed a mean score of 0.5016, which was categorized as moderate. Thus, it can be concluded that group guidance services using a modeling technique based on local culture through wayang media can improve the politeness of fifth-grade students at SD Negeri 1 Pagentan. Keywords: Group Guidance, Modeling Technique, Local Culture, Wayang as a Medium, Politeness.
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