Calcutta National Medical College, Kolkata is one of the best government medical colleges of West Bengal. Now the minimum marks required to get into a medical college is called as Cutoff score. This cutoff score varies every year as it is based on various factors. If we go through the previous year cutoffs, then 566 was cutoff score or the minimum marks for general category for admission to Calcutta National Medical College, Kolkata under 85% state quota. While through All India quota, the cutoffs increases as the less number of seats are reserved for All India quota. Through All India Quota, the cutoff for general category candidate was 607. However this is based on previous year data and this year the cutoffs might change. I would suggest you to use Neet College Predictor tool to know about your admission possibilities
http://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer