ABSTRACT There is more freedom nowadays for workers to move across border. One of the promising oppor- tunities is to become an overseas nurse. However, to become an overseas nurse, one needs a certain level of language skills; thus, it is important to embed English, as the world’s lingua franca, in the nursing science course. When the students of the Nursing Department master the English, they will be able to engage in a communication with others within the international scope. It is very important to prepare them with standard, error-free English to prepare them entering the global market. This research tries to figure out the students’ language proficiency by viewing their gram- matical errors especially in the S-V agreement. The data were taken from the composition written by Nursing Department students, which were then analyzed using the concordance program, namely SCP 4.05. Using the seven pronouns (I, we, you, they, he, she, it) as the key words, the sentence contexts were examined. Then, the sentences that contain errors were taken and categorized. From this research, there are 5 kinds of students’ problems reflected in the errors. They are: 1) sentence without verb, 2) errors in the use of be and stem, 3) inflectional –s for the third singular person, 4) modals, and 5) auxiliary verb. Keywords: error analysis, written composition, students INTRODUCTION The advancement of technology and transportation along with the global policies, such as Asean Economic Community (AEC) or European Union, makes it possible for a person to work in another country easily. Consequently, there is a need for lingua franca because of the mingling of different person with different nationalities needs one language to communicate to each other to conduct the business (www.ncsbn.org). One of the most widely known and used language is English. Therefore learning English becomes very important nowa- days, and at the same times becomes the rich source to do a research on it. The phenomenon of language produce by the learners already attract attention since Error Analysis in Composition Written by Nursing Department Students of Universitas Muhammadiyah Yogyakarta Noor Qomaria Agustina was born in Jogjakarta, and she graduated from the English Education Department Universitas Negeri Yogyakarta and Graduate Program of English Language Studies Universitas Sanata Dharma Yogyakarta. Now she is the Head of Language Training Center and lecturer at English Education Department Universitas Muhammadiyah Yogyakarta. 61-72