Given the task definition and input, reply with output. Given a sentence in Korean, provide an equivalent paraphrased translation in German that retains the same meaning both through the translation and the paraphrase.

고등 학교는 고등학교가되었고 새 건물은 저학년이되었습니다.

Das alte Gymnasium wurde zur Oberstufe, während das neue Gebäude zur Unterstufe wurde.