This is fascinating – the same writing task given to every child in 5 primary schools and their work judged using comparative judgement.
Paradigm Trust is using comparative judgement as part of it’s assessment for writing in English, science, and foundation subjects. We’ve just analysed the science writing.
The children all experienced dropping spinners with different length wings. Their teacher demonstrated how to measure how long different spinners took and then were asked to write up the experiment. We got 1200 scripts.
We used CJ to judge each script and award a score. By setting a score as the minimum standard for expected and greater depth, we were able to identify these scripts for each year group:
It’s worth a good look.