Thanks everyone for the advice.
I actually wrote a very polite e-mail first to ask and got no reply. So went to school, approached the teacher that really likes my S. She pretty much told me the division head already told everyone they are NOT going to do it. It was like suddenly I have the plague, no one will look me in the eyes and everyone is in a hurry to walk away from me.
BTW, I might had worded it wrong. School didn't say they don't want to do the work because S is a competition to the current 8th graders. I was told that the teachers are "really really busy" helping the 8th graders w/ applications.
However, we decided that we should be nice for now. My husband said he'll write to the school to remind them nicely that, though the school has nothing to do w/ S's achievement, they were always happy to brag about the success as part of school's achievement.