If an NT kid was "not in school for two months, [the school district] would be coming after [the parents]. A non-disabled "child who has missed about 18 school days... [is considered] a crisis that triggers a range of emergency interventions."
But a disabled kid not coming to school seems to be a relief the school district, there is no urgency to bring them back. A disabled kid not being able to attend school is never a crisis.
They can be left without services, and at the drop of a hat [for staff shortages and a thousand other excuses by the school] and the child is literally asked not to come to school and stay at home instead. Education it seems, is the responsibility of parents and not the school district when it comes to disabled children.