Abstract-According to the development of new technologies of the Web, there are many researches incorporating web technologies into e-learning environment. Especially, ontology engineering has been applied to invent the semantic models of various learning entities. We have focused on the design of the integrated learning ontology conceptualizing multilevel knowledge structures, such as curriculum, syllabus, learning subject, and materials. In this paper, we present the designed curriculum ontology and syllabus ontology in detail. In addition, we propose a syllabus integration and classification method based on the definition of the semantic model of the syllabus. This approach has the contribution in terms of adaptive concept sequencing and syllabus sharing.