As my four year old has a urgent need of knowing all the ins and outs of everything at the moment. I'm sure she would love to know and maybe have one half an hour session before you did shave it to ask all the questions that the kids have. Maybe on a Thursday or a Friday and then have the shave over the weekend. This would give the kids an opportunity to tell the parents and prepare them. If E came home and said "Karen" is shaving her head because she believes in something so much and she feels it is important to her...I'd think good on the CC centre for educating E on a change. I'm sure missy would also add she is going to be exactly the same and I am allowed to touch it "once" LOL.

But in saying that , it really wouldnt bother me unless it changed the way that they treat and care for my child...