People constantly communicate with one another in order to establish and interpret meanings in their life even though not all people can communicate well because they have a disability in communicating with other people. One example is children who suffer from Autism Spectrum Disorder, who have not developed meaningful gestures or language. One of the treatments for these is by giving them the education they need in a special need school. This research was conducted by using qualitative method with a case study approach to explore the process of interpersonal communication between teachers and students with Autism Spectrum Disorder and also focused on uses of power over students with Autism Spectrum Disorder. Data were collected through in-depth interviews and observations. There were four informants who were teachers in President Special Need Center, Jababeka. To analyze the data, the researcher used Uncertainty Reductions Theory in order to get the results. The findings showed that to decrease the level of uncertainty, the teachers examined the students’ personal interests and behaviors; this came in a few phases. The teachers used their power wisely by giving the compliments in the form of ‘high five’ and ‘stars’ to the students with Autism Spectrum Disorder.

Keywords : Interpersonal Communication, Uncertainty Reduction Theory Uncertainty Level, Autism Spectrum Disorder, and President Special Need Center.