bea15239_king_Group___MedBiquitous_Wiki__CWG_definition
[Term] Performance threshold [Other definitions] AAMC ("Milestone" alternative 2): An achievement point or threshold in medical education, training, or practice (e.g. transition from medical student to residency; earning entrustment in an EPA) defined by reaching predetermined performance levels for a given competency or across an aggregate of competencies. AAMC ("Milestone" alternative 3): A meaningful marker of achievement. [CWG definition] 
New: The point of discrimination between two adjacent performance levels.
Performance Framework - Definitions - Competencies Working Group - MedBiquitous Wiki
CWG definition