Character education has become increasingly important in addressing issues related to students’ ethics and politeness in elementary schools. While many studies have examined Pancasila-based character education, limited research has specifically focused on its role in shaping students’ ethics and courtesy in a particular school context. This study aimed to analyze the implementation of Pancasila-based character values in shaping the ethical behavior and politeness of sixth-grade students at HKBP Maranatha Elementary School, Medan City.This study employed a quantitative survey method. The participants consisted of all 16 sixth-grade students, representing a school-based case study within a single class. Data were collected using a questionnaire containing 13 statements related to ethics and politeness and were analyzed using percentage analysis. The results showed that the implementation of Pancasila-based character values generally produced positive outcomes. Most students demonstrated tolerance, cooperation, and openness to criticism. A total of 81.25% of students often respected differences in religion, ethnicity, and family background, while 56.25% often helped classmates experiencing learning difficulties. Furthermore, 62.5% showed openness to criticism and suggestions. However, some aspects still require improvement, particularly self-control and empathy, as 62.5% of students admitted that they sometimes used harsh language while joking with friends. In conclusion, Pancasila-based character values play an important role in fostering students’ ethics and courtesy. Continuous character development is needed to strengthen empathy, self-control, and polite communication among students.