 In the 2010-11 school year, the total student enrollment was more than 1.78 million students with approximately 275,000 students eligible for special education services.Among these students 18,959 were identified with mental retardation and 21,245 students with autism.The largest group of students are identified as Specific Learning Disabilities 126,026 students (46.9 percent) and Speech or Language Impairments with 43,542 students (16.2 percent).