English as a Lingua Franca (ELF) refers to the use of English as a contact language between people who have different first languages, including native English speakers (Jenkins, 2014). "ELF is simultaneously the consequence and the principal language medium of globalizing processes" (Jenkins, Cogo, & Dewey, 2011, p. 303). In connection with Tamagawa University's goals to enhance education from global perspectives, the Center for English as a Lingua Franca (CELF) at Tamagawa University piloted in 2012 and officially commenced in 2014. The CELF has continually promoted initiatives in raising ELF awareness, improving teaching practices, and researching language education. The objectives of this article are to (1) share CELF's understanding of ELF; (2) report on student classroom-related activities and teacher professional development initiatives; (3) analyze student and teacher survey results; (4) present TOEIC results; and (5) discuss future developments in the program.