law: The Central Educational Institutions (Reservation in Admission) Act, 2006 
  3. Reservation of
  
  seats in Central Educational Institutions. – 
  The reservation of
  
  seats in admission and its extent in a Central Educational Institution shall be
  
  provided in the following manner, namely:-
       
  
   i.        
  
    out
  
  of the annual permitted strength in each branch of study or faculty, fifteen
  
  per cent. seats shall be reserved for the Scheduled Castes;
      
  
   ii.        
  
    out
  
  of the annual permitted strength in each branch of study or faculty, seven and
  
  one-half per cent. seats shall be reserved for the Scheduled Tribes;
     
  
   iii.        
  
  
  
    out
  
  of the annual permitted strength in each branch of study or faculty,
  
  twenty-seven per cent. seats shall be reserved for the Other Backward Classes.