Coeus International School (CIS) offers a unique dual-language, international education in English and the choice of Arabic, French, Greek, Mandarin or Spanish for students in kindergarten through twelfth grade. The school's curriculum, based on the International Baccalaureate (IB) Organisation's Primary, Middle and Diploma Years Programmes, is inquiry-based and transdisciplinary. An IB Candidate School, CIS also offers innovative programs such as Olympism-based athletics, a Professionals-in-Residence Program, Hellenic programs, peace studies and international study tours.

Founded by Dr. J Daniel Hollinger, CIS offers a unique educational opportunity for young people in the Washington metropolitan area. Talented and experienced faculty members, with a proven track record in developing and implementing successful dual-language, International Baccalaureate Programmes, engage students in meaningful and relevant learning. Coeus students excel academically, intellectually and socially, become proficient in two or more world languages, and acquire knowledge and skills to be global citizens.