急!!!!!!!学生应不应该带手机回校英语

should students take mobile phones back to school?

你的说法正确，不过也可以这样表示：
Is it necessary for the student to bring mobile phone to school?

Should students bring mobile phone to school or not?

whether student should bring mobile phone to shcool?

统一一楼

should the students take mobile phone back to the school?