It might be a good idea let him study in China for one year, the

It might be a good idea let him study in China for one year, then come back for 5^th. It worked extremely well for someone we know.  The boy is in one of the most competitive US universities now.  The boy studied at an excellent international school in one big city.  He learned a lot of things there.  对亲子关系更是一个big improvement。也亲眼看到国内孩子worked so hard