The best evidence synthesis is derived from research that provides strong evidence of linkages to learning opportunities, experiences and outcomes for children. An important focus of the work is professional development in support of educational practice that is inclusive of diverse children, families and whanau. Specific emphasis is on evidence related to learning opportunities and outcomes through the provision of professional development for Maori children, Pasifika children and children from low socio-economic families. An extensive search was made for New Zealand and international material through library databases and contact with researchers and professional development providers. Research was critiqued and selected if it met yardsticks for quality evidence. Cross-study analysis was undertaken and the evidence integrated to address the research questions. (author abstract)