I think this is harder when they are young. My ds is at the HS and his age mates are not. Some parents do ask me how we got his placement. I simply say go speak with the principle and she will tell you what will be required from you. I will tell them it included IQ, ACT, and course exit exams for us. They surprisingly rarely go speak to the principle.
My younger dd6 is a hider to begin with and it makes it much less apparent to the tigers prowling around. I have had given names of specific books she has read if some ask. I will actually tell someone who ask specific questions that it is private information and my children would be mortified if I shared it. Which is honestly how my children would feel. My children see it as bragging to share and rude for someone to ask them. Telling them my children would be upset very frequently works as it points out the boundaries indirectly to them. I daydreamed about asking what their kids lasted grade is in a class just to annoy them
