The Silver Bullet Machine
Manufacturing Company Limited
Intelligent Innovation Consultancy
Teachers behaving badly!
Videos and podcasts about the unreliability of school exam grades
On creativity, innovation and systems thinking
School exam grades in England can't be trusted
CAGs, TAGs and mutant algorithms
Grade (un)reliability - the full story
Visualising grade (un)reliability
No, Pearson. 99.2% of your grades were not accurate
Biting the poisoned cherry - why the appeals process for school exams is so unfair
How reliable are GCSE and A level grades?