The Boarding Schools Association told teachers in the UK to learn a 'new language' as part of official guidance which is aimed at helping transgender pupils and 'queering the education system'

Teachers are being told to call transgender children 'zie' rather than 'he' or 'she' to avoid giving offence under new official guidelines.

The Boarding Schools Association has told teachers to learn a 'new language' as part of official guidance which is aimed at 'queering the education system'.

The advice aims to help teachers navigate the 'minefield' of gender identity and deal with children and young adults who do not want to be referred to by male or female pronouns.

As part of it teachers have been told to address children by their 'pronoun of choice', including they or 'zie'.

Alex Thompson, deputy chief executive of the Boarding Schools' Association, said the guidelines hope to help school staff who may be 'in the dark'.

He told The Telegraph: 'Teachers, heads and deputy heads were asking questions about these issues and they felt they were in the dark on what was politically correct and had fears of causing offence as young people largely between the ages of 13 and 18 were questioning their gender identity.

'There was a strong understanding when it more obvious and direct when someone came out as gay but not in the area where young people were asking 'who am I?' to a member of staff and these were questions they had not been asked before.

Mr Thompson added: 'It's amazing how complicated the whole thing is in a community where the norms are the ones we have accepted for years.

'It's tricky for individuals that are having difficulty accepting there is something beyond the binary system of gender we take for granted.'

Last month teachers at Britain's leading girls' schools were told to stop calling pupils 'girls' or 'young women' in case it offends those questioning their gender identity.

Head teachers belonging to the Girls' Schools Association were instructed to use gender-neutral words like 'pupils' or 'students' to avoid discrimination.

The advice also banned the phrase 'young ladies' and recommended the creation of unisex lavatories.

The advice aims to help teachers navigate the 'minefield' of gender identity and deal with children and young adults who do not want to be referred to by male or female pronouns (file image)

Caroline Jordan, President of the GSA and headmistress of £33,000-a-year Headington School in Oxfordshire, backed the advice saying it affects an increasing number of young people questioning their identity.

'In assemblies, instead of saying 'Girls, go to lessons,' staff should consider saying 'Pupils, go to lessons,' or 'Students, go to lessons,'' she told the Sunday Times.

'I do not want anyone to think that girls' or boys' schools are invested in one way of being a girl or one way of being a boy.

My view is that where you can use gender-neutral language about people that is a good thing,' she added.

The advice was given to the GSA by Gendered Intelligence whose chairman, Jay Stewart, branded the phrase 'young ladies' sexist and 'transphobic'.

He said about one per cent of the population were transgender and that the new guidance helps them to not feel like 'freaks.'

Some schools have already introduced gender-neutral uniforms, including Brighton College in the private sector and a further 80 state schools.

Brighton College said it scrapped its traditional uniform to accommodate 'gender dysphoric' pupils.

The college said it has axed the 170-year-old code to meet the needs of youngsters who see themselves as the opposite sex from their biological gender.

Instead, the school is introducing a 'trouser uniform' and a 'skirt uniform' for pupils up to age 16. Girls who have gender dysphoria will be able to wear a tweed blazer, tie and trousers, while dysphoric boys will be able to wear a skirt, bolero jacket and open-neck blouse.