dear mrs mala,
i see by your son's birth in 1994, he would be in his teens now.
i am recollecting my youth here. till i was 14 i used to do extremely well in the class. after that i lost interest in studies. no matter what, nothing would enter my head. i still do not know, how i passed my undergrad engineering, and later post grad degrees too.
i attribute it solely to my skill in expressing myself in english. and nothing more.
so, getting marks, and being class topper, even though a formula that we think is the path to the yellow brick road, it may not all be so.
my closest male relative by marriage, came last in his class in chem engg in annamalai univ. long ago. he did so well in his career, that 10 years after graduation, he hired his class' gold medalist, as the latter was for years without and unable to get a job.
so, all i can suggest, if it is still a concern, is maybe, to find your son's field of interest and guide him to studying in those.
sad to say, mine own was economics. in the madras of 1960s a B.A. in Economics, was the last refuge of someone who didnt get admission any where. so no way, i could have convinced my parents to let me study economics. but in retrospect, i sincerely believe, i could have had so much satisfaction, and based on my confidence now, could have turned to be a good economist.
such is life. take care lady, and be gentle with your son. he is your most precious jewel.
God Bless.