Video modelling (VM) has been found to be an effective intervention in supporting the improvement of social capabilities for children with autism spectrum disorder (ASD). This study examined the effectiveness using video modelling in developing two specific social skills of four students with ASD in a special boys' school namely, playing with friends and how to greet someone at school. The multiple-baseline design across participants was used to evaluate the effectiveness of the video modelling intervention for developing social skills over a period of 18 weeks. The data collected during the study were analysed and discussed in the context of the research questions and literature on the effectiveness of video modelling interventions in developing social skills of children with ASD. The study found that video modelling was effective in developing the targeted social skills in the participating students with ASD and there was evidence that some generalisation of skills had been achieved.