This means the overall pool of graduates is likely to fall and result in fewer trainee teachers, according to the UK's Association of School and College Leaders. Schools have also been forced to spend £1.3b on temporary staff as a result of the chronic shortage of teachers.

But in NSW, the education department's latest figures reveal that only 1.6 per cent of all teachers are aged 20-25 and it warns that by 2021 there will be a "more than adequate supply of primary teachers in all geographical locations" and an "adequate supply of secondary teachers".

Ms Amjadi, 23, who has been working in early childhood and nannying while completing her degree, said she was attracted to working overseas because it would provide her invaluable experience when she returned to Australia.

"I might have been able to get some casual work in Sydney, but I would have had to put in 110 per cent just maybe to get a couple of days," she said.

"I am really excited because I love the sound of the school [in the UK] and I got along really well with the principal in the interview and he really seemed to have a vision for the school so I think it is going to be a great experience for me."