You need to find out if your Academy Trust includes previous LA service in their sick pay calculations. Many don't. There should be an HR person/bursar that you can talk to if you don't have the relevant information from your contract paperwork. Ask them if SSP(Statutory Sick PAY) is automatically paod without you having to apply for it. For those who do get full pay for certain period of time, and then half pay afterwards, SSP is added to the half pay.