They definitely need to perform background checks on ALL people involved with our children. That includes substitute teachers, PTA, everybody! They should also look into DRUG TESTING for every school employee, substitute teachers, bus drivers, etc. The school system's in our nation have been too lax on this. There are plenty of headlines about those that are caught, but I believe that there are plenty of teachers and other school personnel that are unfit to be in a school environment. I think that the teachers in this nation would rise to the occasion if there was a strong message out there of NO TOLERANCE in the workplace. Right now, the current administrators just look the other way to fill the vacancy. Sad! Very, very sad!!! They need to be interested in raising their standards and keeping our children safe instead.