PLEASE CHECK YOUR CHILD'S HEAD PERIODICALLY FOR LICE AND NITS (dandruff-like specks that do not fall off). An early sign of head lice is excessive itching. If discovered at school, you will be contacted by the school. Treatment and removal of live lice should be completed within 1-3 days. After treatment and removal of live lice, your child needs to be seen in the Health Services Clinic for clearance to return to school. The nurse will sign a clearance slip to be taken to your school.