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International Student Exchange Agency Home About Programs News Contact More thanks and welcome for visiting to JIES. At Joy International Exchange Students we are dedicated to the promotion ofcultural understandingacademic developmentand understanding ofdifferent culturesthrough academic homestay programs. It is our philosophy that greater understanding and tolerance of others are developed through interaction on a personal level. Joy International Exchange Students offers middle school and high school academic year programs inbound and the short term homestay programs.