joining us right now to talk about what high schools are doing is athletic direct leo lopez.chool owns a national record, 161 game win streak in 1992 to 2003. thank you both for being here today. the problem of concussion among students. let me start with you. there is a new rule that went into effect. >> they passed a had you law that any student that have symptoms of a concussion must be removed immediately from play and they have to be cleared, written kleernd by a medical provider before they return. >> how is that enforced? >> for the most part the infrastructure that most schools have, trainers and doctors, students and parents work together the appropriate time to come back. >> everybody is different. >> recovery, every person is a little bit different. >> and different schools depending on what they 2 in place to help educate the individuals. >> how big is the problem of concussion? >> i think its huge problem. we're just starting to understand the importance of this at the high school level. you are seeing that more and more in the n.f.l., but we're just getting an u