The major objective of the study was to explore teachers' perceptions about the importance of facial expression in the teaching-learning process. All the teachers of government secondary schools constituted the population of the study. A sample of 40 teachers, both male and female, in rural and urban areas of district Peshawar, were selected through a simple random sampling technique. Data were collected through a questionnaire containing ten items regarding facial expressions. It was concluded that teachers deemed the technology of facial expressions very essential and important, not only for themselves, but also for the attainment of students' learning outcomes.