你儿子会不会有asperger syndrome or high functioning autism? 应该去看看neuropsychologist 做一个evaluation. 我儿子4年级以前也有过同样的经历。 不过现在好多了,每科成绩都是A. 学校的therapies (behavior therapy, speech, occupational therapy) really helped him alot. kids like them usually possesses talent on certain areas, you just have to discover those areas, and emphasize your attention on those parts. Good luck! be patient with your son. :)