Why? Because student behavior is so different from even 5 or 10 or 15 or 20 years ago. If you don't know this - then you have not been in a classroom. I go to visit my daughters school and it is amazing! There are kids who honestly should not be allowed there! They are rude, disrespectful, and aggressive! Not like I knew in school - but down right pathological! Teachers have become prison guards in some schools! It is frightening!