1996 Hyundai Elantra cylinder head and piston

Hi, I have a 96 elantra. I recently had my daughter change the timing belt and fuel pump at the same time. After she finally got the car running smoothly the piston and spark plug closest the timing belt became one. I am 72 years old and cannot afford to take it to a shop. The local high school autoshop has said they will fix it but I need to get the parts. What am I going to need and any suggestions on where to get them. This is a learning experience for the kids so any extra help you can give me would be great. So far the kids and instructor say I need a cylinder head and a complete piston. They do not know if there will be anything else needed. Thank you, joan