As a child, I was also in class with a Kévin who was the worst schooler I've ever seen. He didn't understand anything in class, nor did he listen anyway, and was just always fidgeting with his pencils. Even our teacher kinda gave up on him. Coincidentally, his family was quite poor. I would have thought he was a complete moron if I hadn't become his friend. Out of school, it turned out he was kind, smart and pretty creative. Retroactively, I think he was just ADHD, but at the time this wasn't often diagnosed and those children were simply brushed off as being ill-mannered or outright stupid. If the condition had been known better at that time, and if teachers had been more aware of it, he would have fitted better. I think today he's a mechanic or something like that, and I'm sure he's happy with his life. That's all I wish for him anyway. I should try to get in touch.