1. Introduction This study represents a systematic replication of a previous intervention which took place in schools in Mangere from 2003 to 2005. (McNaughton, MacDonald, Maituanai-Toloa, Lai, & Farry, 2006). The contexts and theoretical rationale are the same for the present study as those for the original Mangere study. We have repeated that historical and social context and theoretical framework here. In this first section, however, we briefly summarise the original study and also outline the form and the role of replication in the science represented here. Replication Our previous study In previous quasiexperimental research with a cluster of similar schools in Mangere in South Auckland we have shown that it