no you are not. they might be doing this because they are jealous or intimidated by you but because you did well you do not deserve this treatment. whynot try talking to one of them preferably the one struggling the most and offer your help in a kind and friendly way. and if they accept try talking to them and let yourself out. but dont make them take advantage of you so please set your boundries this is that you will help them but you will not be their bank for answers. you want a friendship not a tutoring gig. please continue to think highly of yourself but not pit anyone down. you'll make friends easily in no time i bet😁. i and great job on your exams.