Time to stop worrying, hopkins. This is the official line: "The National Curriculum sets standards of achievement in each subject for pupils aged 5 to 14. For most subjects, these standards range from Levels 1 to 8. Pupils progress up the levels as they get older and learn more: most 7 year olds are expected to achieve Level 2 most 11 year olds are expected to achieve Level 4 most 14 year olds are expected to achieve Levels 5 or 6" And that's all there is to it! Teachers are only supposed to assess and report levels once in three years - at the end of the key stage. Any other "levelling" (per term, per year, per piece of work or whatever) just means whatever the teacher wants it to mean and is not worth fretting about. If a twelve year old was assessed as level 4 in Y6, then they're expected to be still level 4 in Y7. They won't be level 5 or 6 for another year or two. And as for "sub levelling", that's total fantasy. There are no descriptions/criteria for sub levels in the national curriculum and so you can make up anything you like for them if you want to pretend that they do exist.