Well, it's good to be an independent thinker and to read widely, but it's also important to not be disruptive in a classroom. I'm **not saying** your daughter is like this, but some people are. If the class is talking about Ancient Egypt, they'll talk about something a little off-topic that they're interested in but no one else is. Or if the teacher is all set to lecture on mummies, the disruptive student bursts out talking about crocodiles in the Nile River. If the class is reading XYZ textbook, they're reading something completely different and claiming that XYZ is boring. It makes you wonder why they signed up for a class in the first place.
Again, I'm not saying that your daughter is being disruptive or taking the class off-topic, but you might want to ask the teacher if that's what she's perceiving. It might not be; it might be something very innocent, for example, your daughter might be answering questions a little too often for the teacher's liking. But in any event, you might want to ask your daughter to tone it down just a bit, for the sake of good manners. She'll probably be very glad to get back to being homeschooled after her taste of a classroom environment!