So what would you have the OP do, @cansu? Meekly roll over and accept the school's out-and-out lie that her daughter needs a managed move? Not bother to look for underlying issues and simply, what, punish? How? (Are you one of those "bring back the cane!" folks? or are you simply ableist?)
Also, kindly explain how a parent can prevent in-school behaviour. And I mean this with all sincerity - what are your suggestions? If a parent cannot sit in the back of a classroom, or follow her around in a school setting, how the EVERLOVING FUCK are we supposed to prevent bad behaviour?
Punishment at home doesn't fix school problems, as much as you'd love to think so.
I bloody empathise with the OP. My youngest is in y8, totally fine in primary apart from slight attention issues, easily corrected. Fast forward to secondary, she's falling apart and I'm desperately contacting the SENCO for help. SENCO doesn't engage. I've got to do all the footwork through the GP. CAMHS takes her on, agrees high probability of ADHD, meanwhile she's continuing to spiral at school because they don't believe she's got ADHD, so it's detention for forgetting a green pen, and now I've got a child who's starting to get the mindset of "if I'm getting punished for forgetting a specific pen, I might as well go ahead and be REALLY bad" which is something I'm desperately trying to fix through meetings with school, reasonable adjustments, and discipline at home.
I mean, I'm careful about posting on Mumsnet these days because there are a ton of posters who viciously parent blame, but it feels like it's next-level at this point, like a proportion of you don't actually want our kids to exist in society anymore. As if some of you prefer to see a kid suffer rather than wonder how we might change the system for the better.
And actually having posted those last two sentences I do think that's what it boils down to - intolerance and hatred. Coupled with a heaping spoonful of "fear/hate the Other."
OP, you're not alone out there and I'm wishing you the best.