but it was once more on the run to Busan in December. In February 1951, Yonhi joined the wartime college; however, it kept an independent body and opened its own courses on October 3, 1951. On April 15, 1953, Yonhi began its work on restoration; Yonhi returned to its campus in the fall. 1953–1959 In 1957, Severance Medical College and Hospital and Yonhi University merged to form Yonsei University. Academics Reputation Yonsei is one of Korea's three "SKY" universities, which are the most prestigious in the country, with the other members being Seoul National University and Korea University. Admission of these "SKY" universities is extremely competitive. Acceptance rate of Yonsei University in early admission(수시) is below 1%. In general, exhibiting 0.5% of academic achievement (Korean SAT) is needed to apply for Yonsei regular admission(정시). Inside Korea, admission to a SKY university is widely considered as a determination of one's career and social status. World rankings Yonsei ranked 73rd in QS World University Rankings 2023, and 1st among private universities (12th overall) in QS Asia University Rankings 2023. Yonsei also ranked 78th in THE World University Rankings 2023, and 1st among private universities in Asia. In THE World University Rankings by Subjects, Yonsei ranked 1st among Korean Universities in four subjects which are Business & Economics, Social Sciences, Clinical & Health, and Psychology. In 2016, Yonsei University was ranked 105th overall, 24th in Social Policy and Administration, 12th in Modern Languages and 51–100 in economics by QS World University Rankings. It was ranked 104th worldwide and second in the nation by Center for World University Rankings in 2017 and in 2018 Academic Ranking of World Universities placed Yonsei University at the 20th position in Asia/Pacific region and third in South Korea. Yonsei was ranked 96th in the world according to an SCI paper published in 2007. Yonsei is one of four Korean universities ranked in all three ARWU World University Ranking, QS World University Rankings, and The Times World University Ranking in 2010–13, along with Seoul National University, KAIST, and POSTECH). Yonsei University was ranked 16th in Asia in 2012 and continues to rise rapidly in global rank: 112 in the world in 2012; 129 in 2011; 142 in 2010; 151 in 2009; 203 in 2008; and ranked globally 236 in 2007 by QS World University Rankings. Yonsei was ranked the first Korean university to be in the Economists 2011 Top