The study of the legal system operating in a country or society is an essential part of the study of law in that country. Not only that the legal institution, processing, integral to other legal courses a law student will have to study, they are also the subject of necessary scrutinizing for accessing how well the law provides a solution to the problem it is intended to meet.
The study of a country’s legal system will enable the student to understand the socio context in which the rule of law they learn about will actually operate.
The study of legal system ensure that the student does not focus solely on the rules of law contained in the statues or gleaned from the decision of the superior court bt to the entire body or growth existing in that society a failure therefore to understand the legal system of the society will make much of what the student learns of those other subject either comprehensible or misleading.
Almost every aspect of life in a modern state is regulated or affected in some ways by the law, there are laws which provide for remedy of defined grievances (e.g. By the payment of damages in respect of accidentally inflicted injury), laws which prohibits antisocial activities and provides for the imposition of penal sanction for breach, (e.g. The criminal law or murder of theft), laws which regulate potentially harmful activities ( e.g. system of licensing, registration or inspection usually in conjunction with the proscription or standard e.g. liquor licensing, The protection of health and safety at work), Laws which confer state benefit upon individual e.g. Education, highways, social security, national health services and laws which facilitates private arrangement (e.g. marriage, contract, will)
In essence, the whole body of law in a society could be said to constitute the legal system in that country hence the Nigerian laws constitute the whole body of the Nigerian legal system.