en <span style=font-size:12pt><span style=text-justify:inter-ideograph><span style=font-family:Times New Roman,serif><b><span lang=EN-ID style=border:none windowtext 1.0pt; font-size:10.0pt; padding:0cm><span style=background:white><span style=font-family:Cambria,serif><span style=color:#4f81bd>Aims:</span></span></span></span></b><span lang=EN-ID style=font-size:10.0pt><span style=font-family:Cambria,serif> This study aimed to determine the efficacy of musical activities and behavioral skills training strategies in group supervision in developing the social skills of high school pupils. <b><span style=border:none windowtext 1.0pt; background:white; padding:0cm><span style=color:#4f81bd></span></span></b></span></span></span></span></span><br> <span style=font-size:12pt><span style=text-justify:inter-ideograph><span style=font-family:Times New Roman,serif><b><span lang=EN-ID style=border:none windowtext 1.0pt; font-size:10.0pt; padding:0cm><span style=background:white><span style=font-family:Cambria,serif><span style=color:#4f81bd>Materials & Methods:</span></span></span></span></b><span lang=EN-ID style=font-size:10.0pt><span style=font-family:Cambria,serif> This randomized controlled study used a sample of high school pupils of Semarang City, Indonesia, in April 2022. The employed tool was a 106-item student social skills scale. The Gregory model's content validity earned a score of 0.94, indicating strong validity. Cronbach's alpha reliability test resulted in a score of 0.961. The Wilcoxon and the Mann-Whitney tests were used in SPSS 25 software.</span></span></span></span></span><br> <span style=font-size:12pt><span style=text-justify:inter-ideograph><span style=font-family:Times New Roman,serif><b><span lang=EN-ID style=border:none windowtext 1.0pt; font-size:10.0pt; padding:0cm><span style=background:white><span style=font-family:Cambria,serif><span style=color:#4f81bd>Findings:</span></span></span></span></b> <span style=font-size:10.0pt><span style=font-family:Cambria,serif>There was no significant difference between the pre-test </span></span><span lang=EN-ID style=font-size:10.0pt><span style=font-family:Cambria,serif>social skills scores of the students in the experimental (</span></span><span style=font-size:10.0pt><span style=font-family:Cambria,serif>326.69±27.15</span></span><span lang=EN-ID style=font-size:10.0pt><span style=font-family:Cambria,serif>) and control (</span></span><span style=font-size:10.0pt><span style=font-family:Cambria,serif>329.62±32.89</span></span><span lang=EN-ID style=font-size:10.0pt><span style=font-family:Cambria,serif>) groups (p>0.05). Also, the social skills score of the experimental group (</span></span><span style=font-size:10.0pt><span style=font-family:Cambria,serif>333.51±26.63</span></span><span lang=EN-ID style=font-size:10.0pt><span style=font-family:Cambria,serif>) was not significantly higher than the control group (</span></span><span style=font-size:10.0pt><span style=font-family:Cambria,serif>332.28±34.01</span></span><span lang=EN-ID style=font-size:10.0pt><span style=font-family:Cambria,serif>) after the educational courses (p=0.517). </span></span><span style=font-size:10.0pt><span style=font-family:Cambria,serif></span></span></span></span></span><br> <span style=font-size:12pt><span style=text-justify:inter-ideograph><span style=font-family:Times New Roman,serif><b><span lang=EN-ID style=border:none windowtext 1.0pt; font-size:10.0pt; padding:0cm><span style=background:white><span style=font-family:Cambria,serif><span style=color:#4f81bd>Conclusion:</span></span></span></span></b><span lang=EN-ID style=font-size:10.0pt><span style=font-family:Cambria,serif> Music activities do not improve high school students’ social skills.</span></span></span></span></span> Musical Activities,Education,Teacher,Behavioral Skills Training,Social,Skills, 139 144 http://hehp.modares.ac.ir/browse.php?a_code=A-10-70384-12&slc_lang=en&sid=4 A. Widyaningrum 1003194753284600325435 1003194753284600325435 No Department of Primary, School of Teacher Education, University PGRI Semarang, Semarang, Indonesia N.A. Rohmansyah 1003194753284600325436 1003194753284600325436 No Department of Physical Education, School of Teacher Education, University PGRI Semarang, Semarang, Indonesia A. Hiruntrakul 1003194753284600325437 1003194753284600325437 Yes Department of Sports and Exercise Science, Faculty of Interdisciplinary Studies, Khon Kaen University, Nong Khai, Thailand