I have been doing regular supply in a primary school and have more work booked with them via an agency. I am still applying for longer term jobs. What can I do about references? Is it appropriate to ask the head of the school for a reference, even though she wouldn't have seen me teach, but just got feedback from other staff/children OR should I as for a reference from the supply agency (again they won't have seen me teach) OR should I stick with the Uni reference and placement school reference? (I am posting in jobseekers as well...) Thanks.