The Gatehouse Project is an innovative, comprehensive approach to mental he
alth promotion in secondary schools. It sets out to promote student engagem
ent and school connectedness as the way to improve emotional well-being and
learning outcomes. The key elements of the whole-school intervention are t
he establishment and support of a school-based adolescent health team; the
identification of risk and protective factors in each school's social and l
eaning environment from student surveys; and, through the use of these data
, the identification and implementation of effective strategies to address
these issues. The project evaluation used a cluster-randomized controlled t
rial design involving 26 schools with initial results demonstrating conside
rable success in reducing smoking rates among Year 8 children. This article
describes and accounts for how system-level changes have been made in scho
ols through a process of capacity building. This encourages teachers, paren
ts, and students to view the core business of education differently.