After finalization, the school may not check every paper. Generally speaking, the school will check the duplicate of the paper before or after submission to check whether there is plagiarism or excessive similarity in the paper.

Different schools and tutors may have different requirements on whether to check the duplicate first or show it to the tutor first. Generally speaking, most schools will provide free duplicate checking opportunities, such as HowNet. Students can take advantage of these opportunities to check the papers first, then modify them according to the results, and finally submit them to the tutor for review. This can improve the quality and originality of the paper and reduce the possibility of being returned or asked for revision.

However, some schools or tutors may require that it be submitted to the tutor for review before checking the duplicate. In this case, students can submit it to the tutor first, and make modifications according to the tutor's opinions, and then use the duplicate checking tool to test and make corresponding modifications according to the test results.

In any case, students should take the duplicate checking and revision of papers seriously, ensure the quality and originality of papers, and avoid the influence of plagiarism or similarity on the achievement or pass rate of papers.