Penelitian ini bertujuan untuk mengetahui pengaruh bimbingan klasikal berbasis pembelajaran sosial emosional (PSE) untuk meningkatkan pemahaman bahaya tentang perundungan. Penelitian ini menggunakan pendekatan kuantitatif metode pra-eksperimen dengan one-group pre-test dan post-test design. Subjek penelitian berjumlah 30 siswa yang dipilih dengan teknik total sampling. Instrument yang digunakan adalah skala bullying yang berjumlah 19 item yang sudah valid dan reliabel. Angket yang disebarkan sebanyak yakni sebelum pemberian treatment dan sesudah pemberian treatment. Hasil penelitian diperoleh Dari hasil analisis pada tes awal pre-test maka diperoleh skor tertinggi 95 dan skor terendah 42. Sedangkan skor rata-rata (X) sebesar 63,40 sedangkan Dari hasil analisis pada akhir post-test maka diperoleh skor tertinggi 110 dan skor terendah 66 Sedangkan skor rata-rata (X) sebesar 79.97. Artinya bahwa hipotesis terdapat pengaruh bimbingan klasikal berbasis PSE untuk meningkatkan pemahaman tentang bahaya perundungan Di SMK Negeri 3 Gorontalo dapat diterima. This research aims to determine the effect of classical guidance based on social emotional learning (PSE) to increase understanding of the dangers of bullying. This research uses a quantitative approach, pre-experimental method with one-group pre-test and post-test design. The research subjects were 30 students selected using total sampling technique. The instrument used is a bullying scale consisting of 19 items which are valid and reliable. There were as many questionnaires distributed as before giving treatment and after giving treatment. The research results were obtained from the results of the analysis at the initial pre-test, the highest score was 95 and the lowest score was 42. Meanwhile the average score (X) was 63.40, while from the results of the analysis at the end of the post-test the highest score was 110 and the score the lowest was 66, while the average score (X) was 79.97. This means that the hypothesis that there is an influence of PSE-based classical guidance to increase understanding of the dangers of bullying at SMK Negeri 3 Gorontalo can be accepted.