用英语表示“经常上学迟到”，可以说是 "He is often late for school."
"Late" 是形容词，表示“迟到的”，而 "for school" 表示“上学”。
一些相关的英文例句和中文翻译如下：
He always arrives late for class. (他总是上课迟到。)
Tim's habit of being late for work is causing problems. (Tim 经常迟到上班的习惯造成了问题。)
She is never on time for appointments. (她约会总是迟到。)