Did your teachers know you had ADHD? Did you need to eat medicine? Anyways, we will try to understand more from him about whether he have a huge difficulty in concentrating, thankfully my mum is pretty understanding if he really cannot concentrate due to ADHD. When its that case then my mum will let him take medicineActually, something I haven't shared yet here is that I had extreme ADHD in school. I eventually gave up on doing homework altogether. Luckily I was usually really good at making up for it by doing good on tests and quizzes in class without barely studying for them. That was like usually 50% of our grades. But anyways, my experiences of trying to do homework were such as this: I would start trying to concentrate on it. Within like 2 minutes my mind would wander to something else. I literally COULD NOT HELP IT. So then again I'd be like "Okay! Focus!" Within a minute or two my mind would wander again. And again "Okay! Focus!" On and on and on to the point that if I would've done all my homework every night I would've literally got no sleep because I could never stay on task. Good luck then trying to perform at school getting literally no sleep every night! But I always did have to fall asleep eventually and not have most of my homework completed. That's why I eventually just gave up on bringing homework home. The teachers were never very understanding. They were assholes and bitches as far as I'm concerned.