General Achmad Yani University Yogyakarta is one of the universities that provides education with one of the NKJA implementation lecture programs. The NKJA course has been held for the first time for 2022 students. To determine the level of application of the NKJA for Class of 2022 students, analysis using k-means is needed. Efforts were made to optimize clusters from k-means results by searching for the best clusters using silhouette scores. The results of this research are 5 clusters which are the best number of clusters. In the 4th cluster, the highest results were obtained with the analysis that the Class of 2022 students had applied the 3 values of the NKJA in their daily lives with the values of struggle, courage and discipline