Absolutely; DS has meltdowns, and he also has tantrums. They are very different and need very different treatment, but not everyone can tell. I once had a teacher approach us in huge concern because he was wailing - he was wailing because I wouldn't buy him a piece of crap he'd been pleading for all week. But a true meltdown from sensory overload? He's not in control of that. It's very, very different.
ASD kids all vary, obviously, but mine can be naughty as all getout at times. That's not the same as him struggling with overload of one sort or another - if he's bolting and needs restraint, he's not doing it because he wants to run in front of a truck, or is angry he's not got his own way. His rational mind has left the building. And no amount of discipline or strategy, other than avoiding sensory stresses as much as possible, can alter that.
His paediatrician commented on this that she finds it frustrating when people think discipline can, eg, make an ASD kid handle a huge concert as "overcoming a challenge". Her view is that it's like removing the wheelchair of a kid with cerebral palsy to improve their muscle tone. It's a recipe for the sort of behaviour some would punish over.
DS tends to be fine with all sensory stresses removed. But that's impossible except for fairly brief stretches of time. And when he is chronically stressed and anxious, adopting discipline methods that will increase that is counter-productive - whatever worked on someone else's neurotypical kid (or, indeed, disabled one).
OP, have you asked your paed to put together a list of recommendations for your DS, for school? Or to talk to the head? Both DS's paeds offered to do both, and it was helpful; school then have a legal obligation to make the necessary reasonable adjustments, which should reduce his stress levels.
Hang on in there. It's a steep learning curve for all of us.