my boy is a big boy, he born in Feb.
And I wrote 2 short letters to the principal. But I don't think it is v. useful.
The most important is the performance. I think KM put great emphasis in Eng., as the first part of interview was the Eng storytelling, the teacher would observe the response of kids to Eng. e.g. if they understand, know the story, response to the teaher.
So I think it also emphasize on Eng