The ECTS grading table is a tool that helps transfer learning outcomes (expressed as marks) among different national systems of evaluation. It is adopted by Universities in member countries of the European Higher Education Area, making it possible to convert marks in one country into those of another in accordance with EU-wide rules.
The ECTS scale, the only one to compare the statistical distribution of marks in the different evaluation systems, enables comparison among the different national grading systems. The ECTS scale is built on the basis of the marks obtained by a homogeneous group of students in a given period.
Each value of the ECTS scale corresponds to a more or less wide range of marks in the national systems.
To make its conversion system more transparent and understandable, the University of Siena has adopted ECTS grading tables, in which each positive mark on the Italian grading scale is assigned a corresponding ECTS mark, in accordance with the rules described above. The tables are updated each year.
Note that the ECTS scale allows the transfer of marks only among universities in countries belonging to the European Higher Education Area.
Although other countries often use one or more grading systems, general mechanisms for converting marks (like the ECTS system) have not been defined.