Am I reading this right? The plan is that a class can't move onto the next level, unless the whole class are ready?
How is this going to work? My dcs school has very mixed ability within a class, as I'm sure most schools do. In Year 3 maths, for example, around a 3rd of the class go up to Year 4, and a good handful are working at Year 5/6 level. Others within Year 3, are working at Year 2/3 Level. If the class have to wait for everyone to catch up, it would be chaos.
Hope I've completely misunderstood this.