Be careful about this, because the school provides the entrance for repeated inspection. If you do a test and the repetition rate is not up to standard after two times, you may have to rewrite the paper. Many other students didn't understand the school rules, and checked the duplicate at will. Our own paper ended twice, which was really frustrating. In this case, students don't need to use the access point provided by the school, but can look for a formal duplicate checking system online first.