Isn't ICT an essential life-skill now? [having no idea what they do for GCSE]
Looking back, I think I could have skipped a year's English without much ill effect at that age. If the girls at this school are generally like the OPs (good at English and well read), and if they have to maintain good written work in other subjects, perhaps its not quite so outrageous?
Only doing 50% History and Geography sounds worse, TBH, given that these may be dropped at GCSE.