Different schools are different. Excellent schools are kept by archives. As long as the file is not burned, it will always be found.

Dissertation is an important part of graduate degree documents, and the quality of dissertations is an important index to measure the quality of graduate education. According to Sampling Inspection of Master's Degree Thesis by the State Council Education Steering Committee Office, the graduation thesis file should include the following contents: 1. Cover of university graduation thesis (design) (printed by Academic Affairs Office); 2 graduation thesis, including title and content, opening report, executive summary, text and related charts, references and other attachments; 3. Guidance and teaching.

As the rights of thesis authors and alumni, some schools even allow alumni (graduates) to use library resources for a long time to support and encourage students to continue their studies after graduation.