The study aimed to investigate the influence of the Value Clarification Technique (VCT) model, through the literary works of Ahmadun Yosi Herfanda, on the nationalism understanding of second-grade students in the Pancasila Education subject. This research employed a quasi-experimental method with a quantitative approach. The population of the study consisted of second-grade students from SMA Negeri 1 Pringsewu. The sample included 72 respondens, with 36 students in the experimental class and 36 in the control class. Data collection techniques primarily involved tests, supported by questionnaires. Data analysis utilized N-Gain Score tests and Simple Linear Regression tests. Based on the N-Gain Score calculations, it was revealed that the implementation of the Value Clarification Technique (VCT) model resulted in an average score of 74% for the experimental class, which could be categorized as quite effective. Furthermore, the results of the simple linear regression test indicated a positive influence, with a percentage of 71.1%. Thus, it could be concluded that the Value Clarification Technique (VCT) learning model was effective in helping second-grade students understand nationalism material in Pancasila Education lessons. This VCT model also demonstrated a positive influence of 71.1% on students' understanding of nationalism, namely students are able to understand the values of national unity, the value of independence or freedom, the value of love for the country, and the value of maintaining the honor of the nation. Additionally, the VCT model enabled students not only to understand the material but also to find meaning in their learning experience.