You're absolutely right. Obviously, we don't ask specific questions such as “are you a rights-holder?”
I think the distinction between the parents and their children is the main source of confusion. The children aren't the rights-holders. Their parents are the rights-holders. Their parents have the right to enrol them in an official language minority school under section 23 of the charter. As you probably know, this section contains three subsections.
We're trying to inform people as much as possible about the subject. That said, when we conducted the survey on the vitality of official language minorities, we didn't need to explain the concept of rights-holders to people, since the questions were clear enough. In addition, even though the subject of education is complicated, it didn't cause a problem as such. However, I agree with you that there's a great deal of confusion.