In this paper we describe the implementation and management of a flexible model for multi-level distance learning-based teacher training. The model was implemented to introduce curricular and pedagogical aspects of teaching logic programming, to high-school computer science leading-teachers, in the framework of an in-service course. Although the advantages of preparing a unique training program for each teacher and initiating peer collaboration were clearly demonstrated during the course, we

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... o noticed several difficulties that may be associated with the decentralization of the course and the exposure and accessibility of the web-based communication.