You can find lawyers in your area by clicking on the Find a Lawyer link at the top of this page but do not count on finding one who will take your case without compensation. Furthermore, what financial loss can you show which would justify a lawsuit? Best wishes to your daughter for finding a school that is more suited to her needs.
Check your local school board policies and administrative procedures for a complaint or grievance mechanism at the school. Follow them precisely, as they are enforceable and have tight timelines. Use the Find a Lawyer link on this page to find an education attorney.