In this photo taken Monday, Aug. 13, 2012, Will Asner, 9, who is autistic, tries to bite into his father's grip, as they walk together to the Nestle Avenue Elementary School in the Tarzana district of Los Angeles. Public school districts are seeing higher proportions of children with special needs due to declining enrollment and charter schools that do not accept as many kids with disabilities, especially more severe disabilities. This raises a question of equitable access for these kids, as well as cost issues for school districts. (AP Photo/Damian Dovarganes)