We try to collect these details in the "goofs" section of each episode's article, there are some already listed, but you are welcome to add anything you may find!

I notice little things here and there it’s fun.

I didn’t notice the cafeteria reuse scene though I don’t think. That’s funny because the colouring of those seasons are so different.

But I do notice a lot they use the same scene outside the school as like an intro, and you can see that it’s the same extras basically walking in a circle to make the school look more crowded

In season one, you can tell there is only one hallway that they keep passing.

And after awhile you can tell that it’s a stunt double. You’ll also notice that after season 4 it’s a different stunt double and the fighting is different, because there is a new stunt coordinator/choreographer.