Established in 1975, the International English Center (IEC) advances internationalization at the University of Colorado Boulder by providing high-quality English language instruction, academic support services, cultural programming, and academic exchange. The center serves international students preparing for university-level studies, working professionals seeking to enhance their career opportunities, current CU Boulder undergraduate and graduate students, and members of the Boulder community.  

The center collaborates with campus and global partners to create customized courses and provide instructional expertise on language learning and intercultural communication. The IEC delivers innovative programs integrating cutting-edge teaching practices, experiential learning, and engaging experiences, making it one of the top destinations for English language study in the United States.  

Students at the IEC get plenty of opportunities to practice their English on the campus and throughout the Boulder community. Our diverse population includes students from all socio-economic backgrounds from more than 50 different countries, including: Angola, Argentina, Australia, Austria, Azerbaijan, Belgium, Bolivia, Brazil, Cambodia, Cameroon, Canada, Chile, China, Colombia, Czech Republic, Dominican Republic, Ecuador, Egypt, Gambia, Germany, Georgia, Guatemala, Hong Kong, Hungary, Indonesia, Italy, Japan, Luxembourg, Kuwait, Macao, Maldives, Mexico, Mongolia, Mozambique, Palestinian Territories, Peru, Philippines, Poland, Russia, Saudi Arabia, South Africa, South Korea, Spain, Sudan, Tanzania, Taiwan, Thailand, Turkey, United Arab Emirates, Uruguay, and Yemen.

The IEC maintains extensive partnerships with international organizations, universities, and government agencies.