Converting NC levels and subdivisions into numerical data for statistical analysis: Is there a standardised way of doing this? For example, is a 3c equivalent to 3.2 or 3.25 or 3.33 etc? If anyone has any details or examples it would be much appreciated. Put simply, we are trying to build an assessment system which allows level data to be treated as numerical data which can be analysed across cohorts, and compared to previous cohorts, national averages and similar schools. On another point, does anyone know if there is an excel based repository of national NC data statistics for the past 6 years for Englsh, Maths and Science at KS1, KS2 and optional Y8 data? Many thanks. My email is here if that's easier than a forum reply.