Officiating has been a major topic this year in the NFL. The NFL installed a coach challenge system for pass interference that has created nothing but controversy and confusion this year as to what is interference and what isn’t interference. Kevin Seifert of ESPN.com joins us on Schooled with the Professor to go through this season of change. We start off by discussing officiating in general this year. The officials agreed to a five-year extension but there could be as many as two dozen officials leaving the league because of a lucrative severance program for officials who have been in the league for two decades. We talk about how much tougher it is to find people willing to be officials. That has a major impact on high school, college and pro sports league. There have been seven referee changes in the past two years. Some of the best of the best have left and more may join them. Kevin then breaks down the pass interference experiment. Officiating is the main topic on Schooled.