I have personally noticed that classroom environment is a key to success. I have been instructing the same 2 classes now for 1 year, and this last term I have had better classes meaning grades and attitudes. The room I was in was small and cramped due to the number of students and equipment/lab space. This last term I had more students but a room that was 2 times the size and a separate lab space. As for myself, I have had a more positive out look on the class and I have seen how this change increased the level of learning.