How you are paid makes a big difference to what you take home. A previous agency I worked through paid me a higher rate but via an umbrella company. I no longer work for them as I found them dishonest. I am now with another agency that pay a lower rate but pay direct and my take home pay per day is slightly more. Also, their schools are generally better behaviour-wise. howiemartinez - it is actually the law that after 12 weeks you should get pay parity after 12 weeks according to Agency Workers Rights. The only trouble is this is open to abuse as you can be got rid of after 12 weeks in order for them to avoid paying you. It's supposed to be illegal to do this, but there doesn't seem to be any enforcement of these rights. Supply teachers pay seems to be a race to the bottom, apart from one or two shortage subjects.