Hello,

Every board have different rule. Like CBSE declare that if candidate pass English and 4 others subject then he or she will pass. West Bengal board declare that best of five subject for 12th so if any one failed in one subject it will be automatically deducted as a sixth subject. But in these case you are failed in two subjects then you have to give the examination. But you can give only your failed subjects examination its not compulsory that you have to give all subjects examination. But once you know it from your school teacher infact principal also.

All the best.