“退学”常见的英文表达是 “drop out of school” 或 “withdraw from school”。
drop out of school: 强调主动、自愿地离开学校,不再继续学业,是比较常用、口语化的表达。例如:He decided to drop out of school to start his own business.(他决定退学去创业。)
withdraw from school: 同样表示从学校退出,语气相对正式一些,可用于书面语或正式场合。例如:She had to withdraw from school due to health problems.(她因为健康问题不得不退学。)