Sixth form withdrawing subjects

[DecisionYesOrNo]

Need your advice. My child got admission in one of the sixth forms for her choice of subjects. They never informed us it was conditional offer based on baseline testing neither verbally not written. Last week they have taken away her 2 subject choices since she dint clear her baseline testing. She can't do those subjects at all. They are very firm. We left admissions for so many schools because of this school and now this. Is this even legal. Please suggest

@CautiousLurker - are they benchmarking all subjects or just the oversubscribed STEM/Maths ones. Are the English lit lot being benchmarked too, for example? In one of my DCs school there is a massive bun fight for Further Maths and CompSci, for example. I wonder if it depends on numbers and subjects in each individual school and how oversubscribed they are for those subjects and how much staff they have.

I’d be interested to know the answer to this too - DS not being benchmarked for economics as didn’t do it at GCSE. Amongst friends it does appear to be just STEM topics, which may explain why my DD wasn’t assessed this way as she did arts/humanities.

I do wonder whether in part it is due to the need to be sure that the GCSE topics have been taken fully on board because A Level teachers don’t want to have spend time recapping essential foundation stuff? With English and history, they’d be doing new texts, new history periods, so it matters less whether they can remember the history of medicine or the plot of An Inspector Calls?