I think it's important for your child to improve on the English standard because a 70 in TOEFL is borderline for admissions to good schools. Having said that, there are quite a few good schools, perhaps not well known who offers very good academic and ESL programs. The key is to do well in terms of learning how to learn during the high school years so your child will matriculate to a good university which is much more important.
Saint James好像是基本不收10年级的，9年级也只招生1个。Westover明确表示只招9年及女生。所以这两个学校基本没有可能，还是需要好好了解学校的基本情况再做选择。ISS的话，这个分数也相当困难，基本上9年级也需要95 的成绩。如果希望能进入较好的学校，TOFEL, SSAT一般而言都是必需的，每个申请美高的孩子，都是这样过来的。加油。
