First of all the school MUST do something to get the bullying of your daughter to stop. Call the school and tell them you want a meeting with the principal, vice principal and supervisor immediately. Tell them if your daughter is bullied one more time, you will be suing the school district. Tell them you want them to bring in the parents of the kids that are bullying your daughter and hold them accountable. Tell the principal you expect him to suspend the kids that are bullying your child so your child can get an education. Take the bullys away.....NOT your daughter! And tell him again you will be suing the school if this is not stopped immediately.
Do not have your child quit school. The school MUST provide her with books if you choose to have her finish her education at home. She can follow the same classes she was taking while going to school, and she can do it at home. The classroom teacher can mark her papers, assign homework and do everything from computer, instead of her being physically in the classroom, if that is your desire. YOU are in control here, NOT the school. YOUR taxes pay their salaries and your daughter is entitled to an education. Don't back down on this one.