Who is Elementary Assessment of Teaching Skills ?

ATS, or Applicant Tracking System, is a software application that enables the electronic handling of recruitment and hiring needs. However, there is no specific certification for ATS. It is a tool used by HR professionals and recruitment specialists. If you're referring to a different ATS, such as the Assistive Technology Specialist, they are professionals who analyze the needs of individuals with disabilities and help them select the appropriate assistive technologies. Their certification exams are usually offered by organizations like RESNA (Rehabilitation Engineering and Assistive Technology Society of North America). However, without more specific information, it's difficult to give a more accurate answer. Please provide more context if you're referring to a different ATS.