“中途退学”常见的英文表达是 “drop out of school midway” 或更简洁的 “drop out of school”（“midway” 可省略，若语境已表明是中途情况）。其中，“drop out” 是一个固定短语，意思是“退出；辍学” 。
例句：
He decided to drop out of school midway due to financial difficulties.（由于经济困难，他决定中途退学。）
Many students drop out of school before completing their education.（许多学生在完成学业之前就中途退学了。）