My son is four and he is going to start in Early French Immersion SK (senior kindergarten) since this September. He now speaks English at school (JK) and most often Chinese at home. According to his teacher, he is a very vocalized kid. So we decided to put him in this program to see how it goes.
其实我们只想让他在一个more challenging的环境中试一下，况且能够比较轻松的掌握第二门外语同时提高学习能力对一生都应该是有益的。担心还是有的。不知道对母语不是英语的小朋友来说，英语能力最终会不会受到影响。不知这里有没有朋友有类似的经历或经验。
