It is not illegal! It's not illegal to write a poor paper and make the teacher dissatisfied. But academic integrity is very important, and students should abide by academic norms and moral standards. If the quality of the paper is really poor, it may affect students' academic performance and grades, as well as their relationship with teachers. But this is not usually considered illegal. Students should strive to improve their writing and research abilities, seek guidance and feedback from teachers, and respect academic norms. However, in some cases, academic misconduct, such as copying other people's works and tampering with data, is regarded as a serious violation, and the school may take corresponding disciplinary measures. Generally speaking, writing a poor paper may lead to academic consequences, but it does not constitute an illegal act. It is important to maintain academic integrity and strive to improve your academic ability and writing ability.