Surprisingly little is known about the micro-leadership and management of the curriculum within schools. This study first applies a purpose-designed set of research instruments to penetrate the micro-workings of school decision-making in curriculum, teaching and learning. Second, it reports the findings from an application of the instruments in six Hong Kong primary schools. In regard to the principal's influence on curriculum, teaching and learning, in four of the six case-study primary schools, the principal's influence was deemed to be direct. This finding stands in contradistinction to the existing body of evidence--gathered mainly from secondary schools--that emphasises the indirect effect of principal leadership. In regard to the second question, concerning the general patterns of within-school curriculum decision-making, leadership and management, there appears to be a high degree of conformity across the six case-study primary schools. (Contains 6 tables and 1 figure.)