 The Foreign Service Institute's School of Language Studies also maintains a network of language field schools in Taipei, Yokohama, Seoul, and other regional programs in the Middle East, North Africa, and Asia where a further 44 weeks of instruction is offered overseas in Mandarin Chinese, Japanese, Korean, and Arabic.Programs and courses of study also include self-study, early morning classes and distance learning courses.FSI is a co-creator of the speaking and reading language proficiency rating scales used throughout the U.S. government.