Rapid growth of web based courses for education and training impose challenges to e-learning systems to generate content according to the level of the learner. Automatic association of particular domain concept with context or pedagogical role of the e-learning materials is made difficult as much of them are in raw form. Blooms taxonomy categories level of educational learning. Identification of documents to particular level of this taxonomy enables e-learning systems to match learner needs. In this work domain ontology based on ACM classification and for pedagogical categorization context ontology was developed. Documents are annotated by their association of domain concepts with educational objectives based on devised algorithms for extraction and ranking of domain and context vocabularies.