This document summarizes a study that examined teachers' perceptions of collaboration at two South African schools that received an award for being inviting schools. The study used Hord's model of professional learning communities to assess collaboration. Hord's model includes five dimensions: shared leadership, shared vision and values, individual and shared learning, shared practices, and supportive conditions. The results showed that teachers perceived collaboration was present at both schools based on the five dimensions being evident. The study validated that Hord's model is consistent with the assumptions of Invitational Education theory regarding collaboration being a cooperative activity.