Levels progress in difficulty, do you dare to compete? (geekwrapped.com)
The new assessment will be used to create school - level progress measures for primaries, to show the progress pupils make from reception until the end of key stage 2. (schoolsweek.co.uk)
You'll almost certainly have to start over from the beginning, or possibly an early save file (but then you lose level progress). (gamesradar.com)