Ok are you brains switched on?
My main questions are 1) Can a supply/temp teacher employed to cover mat leave be redeployed part way through to work elsewhere, and kept on to fill other vacancies at the end of that leave without interviews or advertisement?
Please bare with me while I try and most likely fail to explain the situation.
It involves 3 permanent teachers and one supply/cover teacher.
Teacher A in Class 1, due back in September, her cover has now ended.
Teacher B in Class 2, due back in Jan, cover is supply/temp teacher.
Teacher C in Class 3, starts mat leave in Jan, no cover.
With me so far? Ok summer arrives along with a complete shift around of staff.
September:
Teacher A returns but nolonger has a class :( floating PPA/cover.
Supply/Temp teacher in Class 1 instead of Teacher A 
Teacher B's class 2 to be taught by Teacher X who wants a move but will return in Jan to 'cover' Teacher Cs class 3 untill she returns.
Then I guess a big change around again when teacher C returns.
The only person at all happy with any of this is the supply/temp teacher 
Sorry if I've lost you. If the supply was there to cover Teacher B, surely she should go whereever that teacher would have gone, the problem being that Teacher B is actually now surpless untill January. I also have a feeling that supply will be kept on to fill a new vacancy that has arisen and hasn't been advertised.
Any comments?