Modern universities are both centers of education and research, i.e.Their mission is to build up high skilled specialists from the one hand and to discover and disseminate knowledge from the other. While the availability of highly skilled specialists is one of the preconditions of every sophisticated scholar research, in its turn, the effectiveness of the teaching process greatly depends on the use and application of the scholar investigations results and technologies often developed in the next door department or lab at the same University. The above mentioned issue is also true when talking about the humanities in general and foreign languages acquisition in particular. The traditional attitudes to the development of textbooks, vocabularies, reference grammar books, etc., often ignore objective data and the results of scholar researches and, as a rule, are based on subjective assessments of the instructors. Meanwhile, implementation of the results of scholar linguistic researches in the teaching process would add to its effectiveness and raise its standards. Thus the authors of the current research have developed algorithms of frequency ranking of words on the basis of the computer analysis of large volumes of graphic texts (including ca. 1 mln. units) and compiled a list of the most frequently used words in Arabic. As a result it allowed using the most frequent vocabulary to compile textbooks, grammar and reading tests, dictionaries, etc. The principle of the implementation of the most frequent lexical units from this list is widely used in the process of teaching of Arabic at St. Petersburg State University, for example in building bilingual dictionaries, on-line course of the Arabic language, teaching books and tests as well.