People saying ‘oh so many people don’t understand autisim’, don’t understand autism themselves.
We have no clue, if the child has a 1-2-1. No idea if the child requires much above anything an NT child needs.
Children with autism are all different. My son is autistic, if he walked out of secondary school during the day he would absolutely know what he was doing. He wouldn’t have left because he couldn’t help it or didn’t understand. He doesn’t need to be locked in anywhere.
Not all children with autism are the same and we have very little detail here. We can’t say wether they should or shouldn’t have noticed within 15 mins. Can’t say wether the child needs the ehcp redoing. And so on.
It may shock someone people, but sometimes autistic kids also do things for the same reasons NT kids do. Sometimes they bunk off because they just don’t want to go. Not everything all autistic kids do is a trauma response or processing issue or sensory overload related.
If the child is allocated a 121, who should be providing constant supervision, then yes a complaint should be put in.
If the child is autistic, but usually independent and doesn’t require supervision and can make decisions for themselves and understands what they did, then a complaint is pointless. A school won’t start locking in all students because of one.
If the child fled the school due to an autistic meltdown, op needs to speak to the school and try and figure out why and what can be done to avoid it.