This evaluation-research feasibility study piloted the creation of a technology-mediated managed learning environment (MLE) involving the implementation of one of a new generation of instructionally driven management information systems (IMISs). The system, and supporting information and communications technology (ICT) was employed to support collaborative approaches to practicum supervision in a "borderless" manner. The generation and utilization of information by student teachers and their supervisors was monitored and evaluated in order to ascertain how teaching competence development and reflective practice could enhance professional decision-making in information-rich settings involving the use of IMIS technology. Patterns of communication across the triad of the university tutor-supervisor, school-based cooperating teacher and student teacher were investigated using a multi-site case study involving two schools and one university. The efficacy of the instructional information management system in supporting evidence-based practice by student teachers, and those who supervised them was also evaluated. (Contains 1 figure and 4 notes.)