The mother of a boy who suffered a brain injury after falling at a Tucson, Ariz. elementary school has filed a $23 million claim against the school district. The Arizona Daily Star reported Saturday that the claim for Danette Pahl and her son, Trevor Pahl, was sent this week to the Tucson Unified School District. According to the claim, which generally precedes a lawsuit, 9-year-old Trevor Pahl fell 5 feet from a slide at Fruchthendler Elementary on Aug. 8.