Abstrak Bullying di tingkat sekolah dasar sering dianggap hanya sebagai lelucon, padahal dapat merusak kesehatan mental dan menurunkan semangat belajar anak-anak. Oleh karena itu, memberikan edukasi tentang cara mencegah perundungan sejak awal sangat penting agar menciptakan suasana belajar yang nyaman dan aman. Pengabdian ini bertujuan untuk meningkatkan pemahaman siswa kelas VI SD Negeri 012 Samarinda Ulu tentang perundungan, dengan melaksanakan sosialisasi Program SAHABAT yaitu Sekolah Aman, Harmonis, Bebas Bullying untuk Anak Tangguh. Metode yang digunakan adalah pendekatan edukatif dan partisipatif yang dilaksanakan di SD Negeri 012 Samarinda Ulu pada Jumat, 7 Agustus 2026, dengan melibatkan 105 siswa kelas VI. Kegiatan meliputi penjelasan materi, tayangan video simulasi peran, sesi tanya jawab, kuis interaktif, serta penilaian melalui pre-test dan post-test. Hasil kegiatan menunjukkan adanya peningkatan pemahaman siswa yang ditunjukkan melalui kenaikan nilai rata-rata dari 53,46 pada pre-test menjadi 80,00 pada post-test, dengan nilai N-gain sebesar 0,57 yang termasuk dalam kategori sedang. Selain itu, mayoritas siswa menunjukkan keterlibatan aktif dan responsif selama kegiatan, serta seluruh rangkaian kegiatan dapat terlaksana sesuai dengan perencanaan yang telah disusun. Program SAHABAT terbukti efektif sebagai upaya pencegahan yang membantu meningkatkan pemahaman dan kesadaran siswa tentang antiperundungan. Peran aktif sekolah sangat penting agar lingkungan sekolah dasar tetap aman dan harmonis dalam jangka panjang. Kata kunci: edukasi; kesadaran antiperundungan; pencegahan perundungan; sekolah dasar; sosialisasi. Abstract Bullying at the elementary school level is often perceived as merely a joke, even though it can negatively affect children's mental health and reduce their enthusiasm for learning. Therefore, providing education on bullying prevention from an early age is important to create a comfortable and safe learning environment. This community service activity aimed to improve the understanding of sixth-grade students at SD Negeri 012 Samarinda Ulu regarding bullying through the implementation of the SAHABAT Program, which stands for Sekolah Aman, Harmonis, Bebas Bullying untuk Anak Tangguh (Safe, Harmonious, Bullying-Free School for Resilient Children). The method used was an educational and participatory approach, conducted at SD Negeri 012 Samarinda Ulu on Friday, August 7, 2026, involving 105 sixth-grade students. The activities included material presentation, a role-play video, question-and-answer sessions, interactive quizzes, and assessment through pre-test and post-test. The results showed an increase in students' understanding, as indicated by an increase in the average score from 53.46 on the pre-test to 80.00 on the post-test, with an N-gain score of 0.57, which falls into the medium category. In addition, the majority of students demonstrated active and responsive participation throughout the activities, and all activities were successfully implemented according to the planned program. The SAHABAT Program was effective as a preventive effort to improve students' understanding and awareness of bullying prevention. The active role of the school is important to maintain a safe and harmonious elementary school environment in the long term. Keywords: anti-bullying awareness; bullying prevention; education; elementary school; socialization.