The Netherlands' Basic School Education Act mandated that nursery and primary schools be structurally integrated into "basic schools" for children aged four to twelve by 1984. Inservice training courses, called IVB, were set up to prepare nursery and primary teachers for the new system according to the professional goals of continuity, extended concern, and school-based curriculum development. Since nursery and primary school teachers have separate training programs, the aims of IVB were to promote integrated curriculum skills, a common goal for the schools, and augmented capacities for self-renewal in the schools. Teams of teacher educators from nursery and primary teacher training institutions were recruited to provide two years of instruction at the school level. There have been several hindering factors which have impeded the training process: (1) the lack of cooperation between the nursery and elementary schools and between their training institutions; (2) no coordination with other, similar teacher training courses, which were started before IVB; (3) the constitutional right to freedom of education limits nationwide policy-making capabilities; (4) the need for flexibility in dealing with the different needs of schools and teachers; and (5) the inexperience of the IVB teacher teams. (FG)