Originally Posted by Kai
Originally Posted by indigo
When considering education in general, 11-40% of pupils know the material before the class begins.

This statistic is misleading. It means that 11-40% of students scored as an average student in the next grade up would score on the same test. This does not mean that they have mastered the material typically taught in their own grade or the next grade up.
That may be. Do you have a source for that information? Thanks, Kai.