She fails to co-operate with teachers, refuses to work with others, rarely listens and always seems to think she knows best.
If she is to continue in education it may be necessary for her to "go back" and improve the work that she has done in the earlier years.
Gillian is downright difficult and views school as never being good enough for her. We have tried to maintain a constructive dialogue but she remains negative - "a proper little madam", as the lunchtime supervisor might say.
Socially, Gillian does not believe in partnership and sharing. Nor does she take responsibility for her actions.
My staff have suffered terribly from her precocious and unreasonable demands. Clearly she is a pupil with special needs for which mainstream cannot cope.
Lately she has fallen out with her best friend, John. They argue, blame each other - say one thing and do another. It is most frustrating because they both blame the teachers all the time.
It is a shame that Gill and John do not get on any more because John was a nice boy who tried to please everyone. He's not as bright as she is, in fact he's not very clever at all but he does like sport.
Since Gillian has fallen under the influence of another boy, she concentrates less. She talks to Chris when she should be listening in class. This has got to stop. Chris has written some very rude words which Gillian has picked up from him. He uses the "F" word and now Gill does too.Last week they both ran round the building shouting: "Failures! Failures! You're all failures!"
I don't like Chris's influence on young Gillian. And it gets worse . . . today in a sing-songy voice they whined: "They don't know their Rs - they don't know their Rs" - Reading, Writing and Rithmetic - at least that's what I think they meant.
It is not just Gillian's way with teachers that is a concern. She has a bad attitude to younger pupils and seems determined to do all she can to disrupt the nursery children.
Now we've got two new boys Tony and David who are copying Gillian's behaviour and have started doing the same sort of things. Why can't Gillian be more like nice young Don? He say's he'll bring me an apple tomorrow - with jam on it.
I hope Gillian will soon be removed from the confines of schooling - perhaps to the countryside, where she can develop her interests in agriculture and get her teeth into mad cow disease.
Tony Critchlow is head of drama at Huntington School, York. He delivered this report orally at the NASUWT Easter conference