Sign up with as many agencies as possible. You only need one DBS if you register with the update service.
I needed one, five agencies offered to process the application, I applied via the one that didn't charge more than the actual fee, some were asking for £70.
Stickers are popular with everyone older and younger than year 9. Be generous with them. Other little prizes such as minions erasers are also popular.
There seems to be a game of getting as many pens as possible from supply teachers - give out sparkly pink ones to boys, they will come back. I have had some printed with 'stolen from Ms X' on them.
Get a copy of the disciplinary policy when you arrive at the school and stick to it.
Be prepared to be in any class, from music to art via IT and Cookery.
In the past 12 months I have 'taught' or assisted in teaching
Health and social care
IT
Art
Maths
Spanish
French
Music
Sociology
Photography
Childcare
Science
Resistant Materials
Cookery
Always smile when you are signing out and if you have just done a single day rather than a longer contract always say how much you have enjoyed the school and would love to come back. If that's not true call your agency.
I leave a note for the permanent teacher. I also tend to log the time in students books so my note might be
"At 9.55 I went round the class and put the time in books, you can see how much individual students have done before and after that time. X couldn't find his exercise book so his work is on paper, named and dated and in the front of Y's book'
Always ask if you are allowed to take a drink in to the classroom, some you can, some you need a lid on and others you can only drink in the canteen. Take your own mug and teabags - if you use someone else's make sure you wash it up.
I also tend to wash up and tidy classrooms if a teacher is on sick leave, I think if you come back after a week off you don't want to walk in to a moldy cup.