Not really a great example, really a straw man argument because the code is so shallow. It's really about having relevant code in the relevant place. So yes the

Not really a great example, really a straw man argument because the code is so shallow. It's really about having relevant code in the relevant place. So yes the student object could have that code placed in it's class. That would be truly effective if you had, say, two kinds of students. Like one in a wheelchair and one that can walk. They'd both implement the function to move to the classroom, but internally one would walk() and the other would roll(). That's polymorphism. In the procedural case you'd have to check if(student.inWheelChair == YES) and it would get complex.