An ecological analysis of the supervisory activity of 31 New Zealand school psychologists examined simultaneously the theories of school psychology, supervision practices, and the contextual qualities that mediated participants' supervisory actions. The findings indicated that the school psychologists worked to achieve the supervision goals of support, knowledge, and accountability through reciprocal interaction in multiple relationships within and outside of their professional community. With the notion of supervision broadened to include all activity undertaken to meet the supervisory goals, greater levels of participation and satisfaction with supervisory provision were shown than in many previous studies. The school psychologists utilized various opportunities for supervision support in their day-to-day practice rather than relying solely on traditional dyadic or fixed-group forms. Supervision practices of the school psychologists were situated within the activity of a networked community of supervision practice. Implications for conceptualizing supervision as a broad, situated activity are discussed. (Contains 2 figures.