Let me tell you how things worked with my DD, now 8 and in a special school.
She went to a local mainstream primary from the age of 4, with an EHCP and funding for a full-time 1-1.
The school were amazing. When there were problems - and sometimes there were - they consulted with the LA’s specialist autism teacher and the ed psych.
Despite DD’s at times very challenging behaviour - yes, including throwing chairs - when things were overwhelming, no child was ever hurt. This is because the school was doing its job.
And she was never, ever blamed or described as naughty. The school were happy to support her for as long as we wanted her to remain there, and we never had any negative feedback from other parents.
We eventually made the decision to move her to a special school after lockdown, when she could no longer cope with being in a class of 30, and, obviously, the school couldn’t magically reduce their class sizes.
We were the ones to suggest the move - at no time did anyone, either staff or other parents, put pressure on us to move her.
She’s thriving in her new school, but I’ll always be glad she had three years in mainstream and be deeply grateful to the school for making her time there happy and productive.