If your child is unwell or sick, a 48hr rule is applied from their last point of sickness. For further advice about other illness categories, please visit the NHS website which gives further information regarding common illnesses (chicken pox for example):

https://www.nhs.uk/live-well/is-my-child-too-ill-for-school/#:~:text=It's%20fine%20to%20send%20your,to%20wash%20their%20hands%20regularly.