Sophia stepped in front of the door and further blocked the entrance when a few students tried to enter without her permission. She had specifically instructed those who COULD NOT even produce the Lumos spell to sit out the lesson in the actual transfiguration classroom instead of staying in the line and since they all were able to at least produce light, they could stay.

It really wasn't anymore complicated than that, and she was far too old and too tired to deal with complications.

"Alright, I just wanted to be certain that all wands were working properly because I will not slow down or stop to help anyone who's wand isn't working because you will definitely be relying on wand usage to get through this class. Everything from this point on will be graded, from your attire down to how you walk while you are in the room. While this is an individually graded 'obstacle course'.." and she put that in quotes.." you are allowed to partner up from time to time and get help..on occasions where you really can't do it yourself, though I will deduct points for this. You will be using your common sense as well as any general knowledge about spell you may remember. The trick is only transfiguration spells are allowed." She stepped aside and opened the door. "You may all enter now, and the first person to recap the lesson from last class get's five points."