an international student with one-sided talent for math

After reading all your kind replies I thought I’d better clear some things up for your better understanding my son’s situation. I should have done it at an earlier time.

@Mwfan1921 @Twoin18 He has us citizenship.
@cinnamon1212 He is a very unusual case in his school. School counselor tries to help him out but I would like to do my own research for making the college list and planning coming summer.
@DadTwoGirls He is a typical STEM boy showing strength in math and science but weakness in English and humanities.

He is interested in LACs with a good STEM program as well. Would you please recommand any of them which you believe fits to him?