So, I've just tried out IRT using R on a recent history MCQ (thanks Gemini). Very interesting results. The question difficulty will be good to discuss with the history team. The pupils' scores also shifted about... On a standardised scale up to 5 points - definitely across grade thresholds.
So, I've just tried out IRT using R on a recent history MCQ (thanks Gemini). Very interesting results. The question difficulty will be good to discuss with the history team. The pupils' scores also shifted about... On a standardised scale up to 5 points - definitely across grade thresholds.
How interesting! Yes would be interested to hear whether your history team think the IRT scores are a better reflection of those students’ attainment.