The 3rd M attends French classes every Saturday morning. The first 15 minutes start out well enough (see first picture.) He stands next to the teacher at the table and listens and interacts.
The rest of the time, he’s playing by himself in a corner or marching over to the other parents to demand their smart phones. Note the other boys are sitting nicely. From what I can remember, the 3rd M hasn’t sat down since the class began.