The NCERT curriculum holds great significance in UPSC preparation, particularly for foundational knowledge. NCERT books provide clarity on basic concepts across diverse subjects, serving as a stepping stone for more advanced texts. They cover essential topics in History, Geography, and Economics, often forming the basis of UPSC questions. Moreover, these materials are concise and formulated to cater to various learning levels, making them particularly useful for early-stage aspirants to build a solid knowledge base.