Ignoramus967 wrote:
My 9 year old got his report card scores today. His percentile rank is
at 99% in math, but only 92% in English.

I think that he can do better than than on English. I got 90% on GMAT
verbal part, after just one year of living here, and he's lived in the
US for 9 years, out of which he spoke English for 6 years.

I don't think you should do a thing about it. Your
son could be a great writer and still be marked down
for whatever the test creator decided was not above
average for his group. I remember coaching my daughter
on an writing assignment in 4th grade. She came up
with a delightful sentence or two and I remarked that
Steinbeck could not have said it better. The teacher
'corrected' the sentence to a more bland form.

We need people that carry over part of their ethic
style. Look what Joseph Conrad did. An incredible
novelist who didn't speak fluent English until he was
in his twenties.

Just my humble opinion...