In writing an academic text, one element that should not be overlooked is academic words. Since these words are often used to describe complex ideas, students frequently use them to avoid ambiguity and improve the accuracy of their writing. In this case, the researcher is interested in discovering the number of academic words used by the English Language Education Study Program of Sanata Dharma University in their prospectus document. A corpus linguistics method was used to analyze a corpus through several computational tools. Eventually, the total percentage of AWL (Academic Word List) in the corpus and an AWL frequency list were found. This analysis found that the corpus has reached the 10% AWL level, meaning that the corpus is academic in terms of language. Looking at the usage trend, students utilized more academic words from the first and second AWL sublists. This indicates that the students prefer writing with commonly used academic words, rather than using academic vocabulary that was unusual, infrequent, or rarely found in academic writing in general.