No, this is an administrative act. You can appeal to the higher education department of the school, usually the Municipal Education Commission. Besides, your diploma is useless. You ask the school to issue a certificate of loss of diploma. You mainly rely on a degree certificate to prove your education. Diplomas have no effect. Many students who cheat in exams only have diplomas but no degree certificates, which means they have studied in college for four years. You can also complain to the school, but that's useless, hehe.