CLAT UG is an entrance exam for undergraduate law programs, while CLAT PG is for postgraduate law programs like LLM. The eligibility for CLAT UG requires passing class 12 or equivalent, with minimum marks of 45% for general and 40% for SC/ST candidates. For CLAT PG, the eligibility is a LLB degree with minimum marks of 50% for general and 45% for SC/ST. CLAT UG assesses English, current affairs, legal reasoning, logical reasoning and quantitative techniques. CLAT PG covers various law subjects like constitutional law, jurisprudence, and administrative law.