This report describes a study that utilized the qualitative methodological approach of the focus group, followed by interviews, to gauge the perception of senior educational leaders in Trinidad and Tobago on issues pertaining to school effectiveness. Specifically, the study sought to ascertain from primary and secondary principals, school supervisors, college lecturers, and leaders in the teachers' union factors of critical importance to the effectiveness of the school and the role of the school leadership in influencing the level of effectiveness. Among the variables suggested as important correlates of school effectiveness were student empowerment and the identification of starting points, which extended the concept of regular assessment. Also, while acknowledging the challenges engendered by a centrally controlled hierarchical system that at times hindered the role of the principal, participants emphasized the importance of school leadership and the need for a collective vision as critical characteristics of the effective school. (Contains 34 references.) (Author)