AbstractDispute is common in human co-existence. Therefore,establishment of judicial institution is necessary for every society.Theories of court system are rules that guide resolution ofdisputes in Islamic courts. This paper examines theory of IslamicCourts and its practice in Nigeria. It adopts doctrinalmethodology in the analysis of the fiqh theories. However,doctrinal and empirical methodologies were used in examiningthe Nigerian regime. The paper observes that Nigerian legal Theory of Court System under Islamic Law and the Practice in Nigeria training does not avail one a considerable knowledge in Islamiclaw and thus leads to scarcity of talents in the practice andapplication of Islamic law in Nigeria. The paper recommends forreview of the Nigerian legal education curriculum and its trainingsector. Arabic should be adopted as one of the languages ofinstruction in Shari’ah education and training. Training andretraining of judges of Sharia Courts on Islamic law should beimproved. This can be done by entering into bilateral agreementwith some traditional Ulama and foreign universities.