Germany's Dual System, which consists of in-school and in-enterprise components, facilitates entry into 374 recognized technical, white-collar and blue-collar occupations listed in training regulations that are grounded in legislation. The Dual System's origins and development in Germany were examined along with several attempts to replicate the German model in other countries. The literature on transfer and replication of the Dual System model was reviewed, and micro case studies of attempts to adopt the German model in the following countries were presented: Botswana; Costa Rica; the Dominican Republic; India; Indonesia; Lebanon; Seychelles; Singapore; and Sri Lanka. Reflections of Germany's Dual System in United States work-based youth apprenticeships were also considered. Of all the countries examined in the micro case studies, only Singapore seems to have replicated the German record of participation of 64%-81% of 16- to 18-year-olds in the Dual System. It was concluded that integration of academic and technical-vocational curricula is extremely difficult in nations where technical and vocational education and training is often perceived to be second-class education. It was further concluded that Germany's culture of in-firm training may be the most difficult-to-develop attribute of the Dual System in developed and developing nations alike. (Contains 52 references.) (MN)