What in God's name is "designing field" ??
Please refer to A-Levels as GCE and O'Level (Ordinary Level) as GCSE; so people can understand.
As far as my knowledge goes, there wasn't a provision of "designing subjects" in GCEs.
You have to be specific, if your daughter wants to design space shuttles, houses, chromosomes or fabrics ?
Sorry dude, but you are so wrong and off base, it is ridiculous how you could be so cocky when you don't know what you are talking about.
Yes, I know this is 2 months old, but couldn't let this slide.
Never heard of the field called as "design"? You can do bachelor's and master's degrees in it, even. Only mistake OP made was calling it "designing", but even then, for those in the know, it is obvious what she meant. Designing space shuttles has a separate name, and so do designing houses, chromosomes, or fabrics, so that was ludicrous of you to say. "Design" is a field unto itself, look it up to see what it entails.
Second, you are completely wrong about the names of the courses. Both A-level and O-level are part of GCE, and in fact, their full names are "GCE A-level" and "GCE O-level". GCE stands for "General Certificate of Education", so GCE does not mean A-levels. Furthermore, saying that O-levels are the same as GCSE is categorically false. The British O-levels were replaced by the GCSE (General Certificate of Secondary Education), but O-Levels are still taught in some countries, because they are slightly more rigorous than the GCSE subjects. Finally, why would you even ask her to refer to .... as ....? Anybody who has children studying in the British curriculum (and many who don't) knows what A-levels and O-levels are. In fact, no one refers to A-levels as GCE in conversation. I have done and taught A-levels, and have been involved with British school education for decades, and never heard it. As for GCSE, many people still refer to it as O-levels, and the OP's daughter might actually have done O-levels rather than the GCSE.
Lastly, like most people, you did A-levels (if you did them) or know people who did A-levels in the traditional subjects such as Math, Biology, Business, English, etc. So why would you think there isn't an A-level in Design? Did you know that A-levels are offered in at least a 100 subjects, including in--just to name a few unknown ones--Portuguese Literature, Leisure Studies, Law, Engineering, and Music Technology?
So, next time someone asks anything to do with British secondary education, please stay away.
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As for the OP, I know this is late, but most schools offer A-levels in the traditional secondary school subjects. Anybody who wants to do a subject not offered by the school can do it as a private candidate. That would mean studying on their own. In case of Design, though, you would also need access to tools and materials, so I don't think it would be possible to do it in this country, unless the school happens to have an art and design workshop, or a woodworking workshop, etc, which is unlikely.
Any updates about what your daughter decided to study?