Just to say, and I feel it has to be said, that having ASD doesn't mean you are 'naughty'. DD2 (11) has ASD and has 0 behaviour points (bad marks) since starting Secondary School in September. That means that in 6 months, she hasn't had one time where her uniform has been out of place, she hasn't had the right equipment, she has said or done something that breaks school rules, her hair has been down when it shouldn't be, etc.
DS isn't quite like that. If his needs are being met, particularly his sensory needs, then he is a model pupil. If his needs are not being met, again mainly his sensory needs, then he becomes disruptive - this could be subtle or not so subtle depending on the situation but includes things like shouting out answers, stream of consciousness monologuing, swinging on his chair (and other furniture), pacing around the classroom and visiting other children while they're working, messing around with his equipment (e.g., dismantling all of his pens), chewing/mouthing objects, flapping, rocking, verbal stimming (making "silly" noises repetitively), echolalia, avoidance tactics such as repeated toilet trips, daydreaming, and so on. If he was at school 30 years ago with none of his needs being met he would almost certainly have been considered to be naughty and would have spent most of his time either sitting outside the headteachers office or suspended.