What is an average level at ks3 for 12 year old?

There isn't a single "average" level at KS3 (Key Stage 3) for a 12-year-old in the UK. KS3 covers years 7, 8, and 9, and students progress at different rates. A 12-year-old could be in year 7, 8, or even exceptionally, starting year 9. Therefore, their expected level varies greatly depending on their year group and individual progress.

Instead of an average level, you'd look at expected *progress* and attainment within a year group. For example, a 12-year-old in year 7 would be expected to be working at a level appropriate for year 7, which would be significantly below what a 12-year-old in year 9 would be expected to achieve.

The grading system also varies by subject and school. While some might use numerical grades or levels, others might use a more descriptive system focusing on progress and attainment targets.

In short, there's no single "average" to reference; it depends entirely on the individual student and their year group.