경기고등학교
Jang was born in Princeton, New Jersey, USA. She is the daughter of Daniel Jang who has a doctorate from Princeton University and is also a graduate of Kyunggi High School and Seoul National University. Her mother, Carolyn Bok Jang, immigrated to New York City from South Korea and worked for world-renowned painter Salvatore Dali and was a model for Ford Models. Her grandfather, Dr. Young-Chul Jang was a president of Choongbuk National University. At the young age of four, Rose was admitted into The Manhattan School of Music's children's program. There, she received lessons in music for the piano, violin and voice. She also served as concertmaster for her Bridgewater-Raritan High School. The high school's symphony orchestra consisted of 120 members. She performed the violin as part of the New Jersey Youth Symphony. She performed with the New Jersey Youth Symphony at Carnegie Hall at the age of 17. She is a graduate of Smith College. She has also studied at Goldsmiths College in London. Jang is a member of the Princeton Korean Church which is a Christian Presbyterian Church located in Princeton, New Jersey. She is fluent in English, Korean, and French.