This study aims to describe bullying behavior in SD Muhammadiyah 15 Surakarta,. This type of research is qualitative research (Qualitative Research). Data collection techniques are conducted through interviews, and supporte d by observation and documentation. The validity of the data using source triangulation. Data analysis techniques performed from the reduction stage, display data, and verification/conclusion. The results showed that the perpetrators of school bullying in SD Muhammadiyah 15 Surakarta performed by students, namely Riyan, Riko and Bagus. The causes of school bullying are the school climate, family, social environment, and impressions or media. School bullying behavior is common during break times. The most common type of s...