Riko Furukawabata and Haruki Tanifuji giggle while they demonstrate the preparation of a noodle dish in an RUHS classroom as they and eight other students visiting from Shizukuishi, Japan made traditional foods of their homeland for a potluck dinner at the high school Tuesday night. Students in Shizukuishi and Randolph have been visiting one another’s homes for more than two decades. (Herald / Tim Calabro)