Thank you to everyone contributing to this discussion. All of the comments are useful and I am touched by your compassion for my daughter. I just want to clarify my original question: competition for places at upper school and companies is fierce, as we know, and as those organisations will have far more applicants than places they will look for any reason to reject someone. If two dancers of equal ability are going for one place but one of them is known to have - or had - an eating disorder then she/he is bound to lose out. We don't want to deceive the school, and clearly we wouldn't push our daughter into an even more pressured environment if her eating and weight loss were still a concern. But if the issue is under control and she is moving in the right direction we don't want to needlessly jeopardise her chance of being accepted by disclosing a condition that is, we hope, resolved.