Anything, if one wants to achieve anything, talent and hardworking are both required for most cases. If you have not spent time to help him plan in the past 3 years, do not need to feel regretful. Your son has talent for sure, without good planning from him and his parents, the chance for a chinese/asian boy to get to top schools is too low. On the other hand, if he is a bright kid, he will have a bright future, regardless where he goes to college.