This document provides Specification for ATCO common core content Initial (Basic and Rating training) training. It includes a main body of text, explaining the background, context, traceability and use of the Common Core Content Initial Training principles relevant to various syllabi, and seven separate Annexes. Annex 1 corresponds to the Basic training while the six others correspond to the ratings contained in the Student Air Traffic Controller Licence described in the “European Manual of Personnel Licensing – Air Traffic Controllers.