Very short talk given in the Institute of Educational Technology (IET) at the OU on a diagnostic assessment process involving marking sample essays for which we have reference values, and using the difference from the reference values to assess rater quality (and provide formative feedback). I used to do similar things to this as a teacher, e.g. these resources: *
Example 12 mark GCSE AQA A response (sociology)
PSYA4 example paper (3nd one) markscheme + exemplar and PSYA4 example paper (2nd one) markscheme
PSYA3 relationships childhood impact on adult relationships A2 exam skills
Diagnostic assessment and training for peer and self-assessment from Simon Knight