Sawaludin N, Kadafi A, Christiana R. THE EFFECTIVENESS OF BEHAVIORAL CONTRACT GROUP COUNSELING IN IMPROVING THE DISCIPLINE OF 11TH-GRADE STUDENTS AT PILANGKENCENG STATE HIGH SCHOOL, MADIUN REGENCY. jkpi [Internet]. 2026 May 16 [cited 2026 May 26];7(2). Available from: https://jurnalalkhairat.org/ojs/index.php/jkpi/article/view/1816