The purpose of this study was to examine the effect of co-cultural reliance on language acquisition of Chinese Graduate students at the University of Connecticut. This paper examines co-cultural reliance through the frameworks of intercultural communication and theories of cultural adjustment. The subjects for this study were nine Mainland Chinese Graduate students and one Tawianese Graduate student. Data was collected through interviews that highlighted: sojourn preparation; housing; departmental interaction; socialization with Americans; socialization with co-culturals; and cultural difficulties. Results indicated that co-cultural emerges pre-departure and continues through the duration of the sojourn. Co-cultural reliance was found to correlate with limited use and acquisition of English.