Complex sentence: Soongsil's IT, economic, and business majors is considered especially strong; its business school has the 12th biggest number of alumni with A CPA and computer science, which Soongsil was a pionner in Korea, is currently ranked ranked second after Seoul National University.
Split into simpler sentences: Soongsil's IT, economic, and business majors is considered especially strong; its business school has the 12th biggest number of alumni with CPAs. Its computer science field, which Soongsil was a pionner in Korea, is currently ranked ranked second after Seoul National University.