The article discusses the Case Method – the dominant method of teaching in American law schools, based on an analysis of judicial decisions, created in the 1870s by Christophus Collumbus Langdell. Langdell perceived law as a science similar to physics or chemistry, and hence as an ordered system of objective knowledge, and the method of teaching that he created was intended to educate people dealing with law in a scientific manner. The article presents Langdell’s concept of law and the impact of his teaching method on the trends in American legal philosophy – classical jurisprudence and legal realism.