The marking scheme for the UPSC Mains Examination allocates a total of 1750 marks for nine written papers, including optional subjects and General Studies. Each paper holds equal weight, typically 250 marks. The evaluations prioritize quality of content, analysis, and expression. Papers are scored based on defined parameters, with clear benchmarks for assessing relevance and clarity. Candidates must also meet a minimum qualifying score in specific papers, which can influence their overall performance in the selection process.