<![CDATA[Student responsibility is an important character that needs to be developed because it is related to discipline, independence, compliance with rules, and the ability to consistently fulfill obligations. This study aimed to determine the effect of classical guidance services using role-playing techniques on improving the responsibility of Class VIII-B students at UPTD SMP Negeri 1 Gunungsitoli Utara. The study employed a quantitative approach with a pre-experimental method and a one-group pretest-posttest design. The research was conducted from May to June 2026. The population consisted of 143 eighth-grade students, while the sample comprised 28 students of Class VIII-B selected using purposive sampling. Data were collected using a four-point Likert-scale questionnaire consisting of 30 statements measuring student responsibility. Data analysis was conducted using normality, linearity, Pearson correlation, simple linear regression, paired sample t-test, and N-Gain analyses with the assistance of IBM SPSS Statistics 22. The results showed that the pretest and posttest data were normally distributed, with significance values of 0.331 and 0.136, respectively. The paired sample t-test yielded a calculated t value of 29.115, which was greater than the critical t value of 1.706, with a significance value of 0.000 < 0.05. The mean difference between the posttest and pretest scores was 6.429, indicating an increase in students' responsibility following the intervention. Furthermore, the mean N-Gain score was 0.3136, which was categorized as moderate. These findings indicate that classical guidance services using role-playing techniques had a positive and statistically significant effect on improving student responsibility. However, the moderate N-Gain score indicates that continued reinforcement through sustainable guidance services is needed to achieve more optimal and consistent changes in students' responsible behavior. ABSTRAK Tanggung jawab merupakan karakter penting yang perlu dikembangkan pada siswa karena berkaitan dengan kedisiplinan, kemandirian, kepatuhan terhadap aturan, dan kemampuan menyelesaikan kewajiban secara konsisten. Penelitian ini bertujuan untuk mengetahui pengaruh bimbingan klasikal melalui teknik role playing terhadap peningkatan tanggung jawab siswa kelas VIII-B di UPTD SMP Negeri 1 Gunungsitoli Utara. Penelitian menggunakan pendekatan kuantitatif dengan metode pre-experimental dan desain one group pretest-posttest. Penelitian dilaksanakan pada Mei–Juni 2026 dengan populasi 143 siswa kelas VIII dan sampel 28 siswa kelas VIII-B yang dipilih melalui purposive sampling. Data dikumpulkan menggunakan angket tanggung jawab siswa berskala Likert empat tingkat yang terdiri atas 30 butir pernyataan. Analisis data dilakukan menggunakan uji normalitas, uji linearitas, korelasi Pearson, regresi linear sederhana, paired sample t-test, dan N-Gain dengan bantuan IBM SPSS Statistics 22. Hasil penelitian menunjukkan bahwa data pretest dan posttest berdistribusi normal dengan nilai signifikansi masing-masing 0,331 dan 0,136. Uji paired sample t-test menunjukkan nilai thitung = 29,115 > ttabel= 1,706) dengan signifikansi 0,000 < 0,05, sehingga terdapat perbedaan yang signifikan antara tanggung jawab siswa sebelum dan sesudah pemberian layanan. Rata-rata selisih skor sebesar 6,429 menunjukkan adanya peningkatan tanggung jawab setelah intervensi, sedangkan nilai N-Gain sebesar 0,3136 berada pada kategori sedang. Dengan demikian, layanan bimbingan klasikal melalui teknik role playing berpengaruh positif dan signifikan terhadap peningkatan tanggung jawab siswa kelas VIII-B. Meskipun demikian, peningkatan yang berada pada kategori sedang menunjukkan bahwa penguatan melalui layanan yang berkelanjutan masih diperlukan agar perubahan tanggung jawab dapat berkembang secara lebih optimal dan konsisten.]]>
