Bullying

My daughter was bullied in a local school in Joliet. I feel like the school isn't doing anything it about it. They just pushed the problem under the rug and the school know about the situation but didn't call home. My child was afraid to go school because the bullies gained up on her.. The school is saying my child made this situation up. How can child make these things up. My daughter had to be hospitalize due to this situation. Am reaching out to the community for help in dealing with the school.