About 5% of public students (2.5 million) in the U.S. have a learning disability, of which almost two-thirds are male. The State of Learning Disabilities: Facts, Trends and Indicators (2011) will give you key facts and current statistics about LD, as well as info about LD in secondary schools, postsecondary education, and the workforce. From the National Center for Learning Disabilities (NCLD).
http://www.ncld.org/stateofld
