Am I understanding this correctly?

School A introduced a new A level subject with their first ever yr 13 cohort finishing and collecting their results this year.

As no historical data for this subject for this school their CAGs were just accepted and awarded 1/n

School B has delivered same subject for many years. Teachers more experienced. More accurate assessment over time. Recognise work at certain grades more readily. Perhaps one of them is actually a moderator for the exam board.

School B has the algorithm applied to their CAGs 2/n

Add to this the number of schools across the country with small cohorts in the subject who, like school A, just had their CAGs accepted and awarded.

What chance did staff and students in school B have in that subject?

3/n

If we accept that all teachers in all schools have been professional and acted with integrity and awarded honest CAGs - but that this has results across the country in slightly optimistic inflated grades then in this scenario there is only one possible conclusion... 4/n

In order to ensure results nationwide in this subject mirror previous years' results as closely as possible - school Bs results have to be downgraded much, much further than is fair and reasonable 5/n

So, despite potentially having the most accurate and reliable CAGs - because of the way the algorithm works and was applied to some schools/departments and not others - they will have been adjusted down enough to counter the potential inflation in all the other schools. 6/6.