Understanding the UPSC marking scheme is critical for effective preparation, as it informs candidates which areas to prioritize. Grasping the weightage assigned to different subjects and question types enables aspirants to allocate their time more efficiently during studies. Additionally, knowledge of negative marking for incorrect answers in the preliminary exam encourages careful answering. Familiarity with the evaluation criteria for mains answers, including structure, relevance, and critical analysis, helps candidates develop their writing style, ensuring they meet expectations during assessments.