Generic : How much weightage is given to Class 10 and 12 marks?

It varies widely. IIM Calcutta gives them 25 points out of 85 at shortlisting, nearly 30% of the score. IIM Indore gives Class 12 alone 25 points out of 100. IIM Bangalore gives 10 each out of 100. IIM Ahmedabad uses them as a screening threshold rather than a score, requiring an average of 80% for Science students in the General category.