Yes, the school teacher's project papers for one year need to be checked again. This is because the papers written by teachers need to conform to the principles of academic integrity and academic ethics, and at the same time ensure the quality and originality of the papers. Therefore, before submitting a paper, teachers need to check their own repetition or use professional duplicate checking tools to ensure that the repetition rate of the paper is within an acceptable range.

It should be noted that different schools or institutions may have different standards and requirements for duplicate checking of teachers' papers. Therefore, teachers need to determine the methods and standards of duplicate checking according to the specific requirements of their own schools or institutions. At the same time, we should also abide by the principles of academic integrity and academic ethics, do not copy or plagiarize other people's achievements, and ensure the quality and originality of the paper.