If you are serious about your career as a teacher having to live on a strict budget shouldn't be an issue, especially as it is only for a year.
Currently I work full time and have done for 3 years, currently earning £30+k pa and have decided to leave this to start university in september and live on little under £80 a week after paying accomodation.
The reason I give you my example is because if you want this as much as you say, it wont be a problem no matter how much of a lifestyle change it will be, like me, my lifestyle is going to change drastically from being able to buy anything I want, go out a few nights a week and not worry about blowing £100.
Its a years struggle for a career and lifestyle you will enjoy in the future.
I got a teacher assistant job starting this september. i'm in my second year of university and the pay is £40 a day. so £12,000 salary is pretty decent for someone with no teaching qualifications/ experience.
where is the placement? london?
my friend is a teaching assistant in a primary school in east london. she used to get paid £18,000 the last time, but thats only because she was doing nvq's.
because of how the tax year is run, you will pretty much get £12,000 in the full amount if your tax code is 647L and you haven't earn any wages since april.
Might not be possible, but cheaper rent? Any possible discount on income tax for low earners? Living in slightly lesser accomodation to have more time for yourself is a sacrifice I'd take. Why take so many extra part time shifts to pay for a flat you're never in, because you're too busy paying off rent?!