DDA Inc. is a private driver training school licensed by the Pennsylvania Department of Education. DDA is the only driving school in PA contracted by PennDOT to perform driver license testing in two locations: our corporate headquarters in Newtown Square, and the Pep Boys retail automotive center in Exton. Along with teaching and training young drivers and adults how to become safe, responsible defensive drivers, DDA also consults with businesses, corporations and townships on how to manage their fleets more effectively.