The CLS Program is a program of the U.S. Department of State, Bureau of Educational and Cultural Affairs. It is a fully-funded overseas intensive language and cultural immersion program for American undergraduate and graduate students. With the goal of broadening the base of Americans studying and mastering critical languages and to build relationships between the people of the United States and other countries, CLS provides opportunities to a diverse range of students from across the United States at every level of language learning.

The fourteen CLS languages are: Arabic, Azerbaijani, Bangla, Chinese, Hindi, Indonesian, Japanese, Korean, Persian, Punjabi, Russian, Swahili, Turkish, and Urdu.

The CLS Program seeks participants with diverse interests, from a wide variety of fields of study, backgrounds and career paths, with the purpose of representing the full diversity of the United States. Thus, students from all academic disciplines, including business, engineering, law, medicine, science, social sciences, arts and humanities are encouraged to apply.

There is no service requirement for CLS Alumni after the program. However, participants are expected to continue their language study beyond the scholarship period, and later apply their critical language skills in their professional careers. Participants are selected based on their commitment to language learning and plans to apply their language skills to their future academic or professional pursuits.