Through two school case studies in Cyprus, in this paper I explore the role of small internal collaborative networks in promoting school improvement. The analysis of the two cases revealed a series of interrelated themes which indicated issues related to school improvement, and actually, it provided evidence that small internal collaborative networks could contribute to school improvement. This contribution was related to the development of interest in the learning of children coming from vulnerable groups, to the creation of conditions for more effective leadership and management within the schools, and to changes in the culture of the schools.