my daughter slipped and fell playing kickball at school and dislocated her knee requiring surgery and the school refuses to help pay

i am sorry about your child's injury. Playground accidents can be difficult. You would need to show that the school were negligent and of that they lacked adequate supervision for the children on the playground. Also, since the claim is against a municipality, you need to check the statutory laws as to notice to a municipality. In Wisconsin, the notice is 120 days for serving written notice of your claim. If you don't, the claim is forever barred.