Аннотация:The study aims at determining suitable criteria in classifying the grammarians of Kufa and Basra Schools, which depend on the studentship as a criterion to classify the grammarians in order to eliminate the existing confusion in the books of classifications and biographies.The researcher manages to identify the criterion of classifications with extra determinants stemming from the studentship, which makes an access to a perfect perception in the classifications of the grammarians in Kufa and Basra.Moreover, the researcher concentrates on identifying the grammarian and his student, strictly following the consensus of all related references, and leaving biographizing the élite to the specialized books of biography and other historical references.