This is a free service. Agencies make their money by finding teachers/support personnel work and charging the client, in this case, schools.

There are two ways charges are made to schools. Either a daily charge rate, which means the recruitment agency are responsible for paying you an agreed rate and deducting Tax and National Insurance (NI) contributions accordingly.

The second way is where you are employed at the school, the school pay you to deduct your Tax and National Insurance (NI) and the school is charged an introduction fee by the agency.