Clary, nobody is asking you to say that you are a babysitter. You could simply tell them that you are a cover supervisor. Obviously the interaction between children and a teacher is going to be different between that of children and a cover supervisor.
A cover supervisor is unlikely to have a great deal of knowledge of the subject they are teaching. Many children in secondary school will have knowledge of the subjects they are studying. I have postgraduate qualifications, but I am aware that there are many GCSE students of, German or Latin for example, that would know more than me.
If I went into a classroom as a cover supervisor or a supply teacher with a different specialism (I am neither), I would have the respect for the children's intelligence to explain the lesson was being supervised rather than taught, and they would then understand that they could proceed with some basic self-tuition, but that the adult in the room didn't actually have the skills to advise them on many questions they had on the subject matter.
I don't think this is a problem just with cover supervisors but with the growth of teachers being expected to cover subjects on a long term basis that they have limited knowledge of - Biology teachers teaching Physics for example. It does bring teaching into disrepute if children are led to believe someone is qualified to teach something when in some instances they are neither qualified to teach nor qualified in the subject.
To think otherwise suggests you are basing it on some strange assumptions:
- Kids are a bit thick. Teaching is simply a matter of being one step ahead of them in the curriculum. Children are not routinely going to ask questions that are beyond the curriculum, such as relating the topic in hand to their own experience, so you don't really need to know any more about Physics or History than what is laid out in the lesson plan in order to teach.
- Kids are a bit thick and a bit nasty. If you acknowledged that you were supervising not teaching, they wouldn't be able to adjust their behaviour accordingly in order to get the most out of the learning experience. It is therefore better to mislead them in order to ensure good behaviour.
- Teaching isn't actually a specialist or professional skill. There isn't really any difference between what you do and what a teacher does, so it is perfectly acceptable to consider yourself teaching staff.
If people genuinely believe that cover supervisors as a group are as capable (or according to some people more capable) of teaching as qualified teachers, we should abolish teaching as a profession.
But while I accept that it is just an acceptable mistake when DS tells me his cover supervisor told him that all vegetables are green except mushrooms, if that cover supervisor tells DS that she is a teacher and makes such a statement, DS is going to lose confidence and I am going to be concerned about the state of teaching in his school, believing the statement to be made as part of teaching by a teacher.