This chapter provides an overview of the contribution the Prague School of Linguistics has made to the study of linguistic norm. Departing from a functionalist approach to the analysis of language, the Prague School shaped and theorized the influential notions of language culture (jazykova kultura, Sprachkultur) and language cultivation (Sprachpflege) at a time when, in Western Europe, prescriptive approaches to language were considered unworthy of scientific attention. Distancing themselves from "purist" and "school-grammar" conceptions of language maintenance and based on the case of Czech language culture, the representatives of the Prague School advocated for the cultivation of the written (standard) language in functional terms in order to achieve a "stable" yet "elastic" concept of norm.