Senior on the varsity team. Identified as a highrisk player. High risk for concussions because of those hard hits on the field. But its those hits on the field that worry his mom cara. When i see jordan get hit, im usually thinking about how hard was that hit . Is that hit going to turn into a concussion . Was it hard enough for a concussion . Thats the part that i dont really know. Reporter across the country parents like cara are questioning just how safe the game is. Preoccupied a big hit could land their son in an emergency room or worse. Since july there have been 11 high school fatalities, seven directly related to a traumatic injury. The most recent . Slipped past a tackle reporter luke shem, number 4, scoring in a playoff game two weeks ago after taking a hit in the Third Quarter and running was flown to a hospital where he died the next day after his family removed him from life support. Our beautiful gift from god months longer with us. Reporter tonight another high schooler in Southern California still recovering at a Medical Center four weeks after what appeared to be a routine tackle. Dramatic video showing josh nava stumble off the field. Needing emergency surgery to stop the bleeding, swelling, and pressure on his brain. He looks like hes in pain. Reporter little is known about how hard nava was hit but the helmet he wore contains sensors able to catch that data. But a School Official said the device malfunctioned that night. Concussions. The longterm effects of multiple concussions or even just one concussion. Reporter so is a team of researchers from university of North Carolina who determined jordan to be an atrisk player for head injury. Hard hits to his head from early in the season flagging him, turning him into a subject in their threeyear study aimed at knew. I didnt realize in the beginning that he was the one getting more impacts than anybody else. Impacts mean. Were trying to better understand if we can change the behavior on the field. Reporter dr. Kevin goskowicz leads the study known as bemo, short for behavior modification. This is footage of teams in our study. They have this system in their helmets. Reporter researchers track, in realtime, the number and strength of hits to players heads. That data, some of which is shown in this video from the study, reveals who they say may be at risk for concussions. Whats 95g like in the context of a car . 25 miles an hour. Reporter coaches staged an intervention with jordan, focusing on drills to help him understand whats seen as a safer way to play. Howto videos. Its based on a method of tackling and blocking known as headsup football, an nflfunded and promoted Program Emphasizing shoulders when tackling, not with their heads. A recent analysis found players between the age of 5 and 15 playing on teams adopting the program had a 76 reduction in injuries and a 29 reduction of concussions during games. Jordan works on his form during specific drills at practice. And then reviews video of it from previous games. The impact that you took on 95g hit. My stance is terrible and im way too far down. These guys are used to tackling with all their might, all their force. They dont want to think. The right way . T message were sending is youve got to play smart today, to be able to play later. Reporter he showed me video of jordan from early in the season which he says shows poor form. Whats he doing wrong . Well, you can see hes head to head right there. Thats a high impact. Reporter he compared to it a video under the friday night lights. Same exact play but youre going to see hes going to get out . Front, going to get those arms up a little earlier. At impact thats better clearly technique. Reporter hes part of the nfls head, neck and spine committee. And dismisses scrutiny arising from his nfl connection. Youre on an nfl committee. Are you concerned that some people will see your results and be do you remember yus of those results . Im an unpaid consultant or advising them about what we see as ways to ilprove safety in their sport. Im much more interested in trying to make a difference at this youth level. Reporter and hes not the only one investigating a way to make the game safer. Eric schwartz, former rugby player, knows tackles in that game almost never involved the head. Your thought is if they learn it without the pads, rugby style, they wont do it as much during the game. We hope it will carry over. It eliminates one player from basically turning their body into a projectile to blow somebody up. Reporter known as helmetless tackle training, he used university of New Hampshire wildcats as test recruits. And he says theres some early evidence its working. Weve been able to identify that some of them actually decrease in the number of impacts per exposure. Reporter eager to help younger players, swartz approached a nearby high school and enrolled them in a study. Wired with monitors they practiced tackling without helmets and pads. Unh researchers counted more than 50,000 head impacted this season. How many times cab a High School Player face contact in a game . They can receive 30, 40 impacts to the head in a single game. Reporter swarts catching the eye of ge, under armour, and study. I understand there is a level of scrutiny and skepticism. I get that. That was just one of the opportunities that was available that we pursued. Reporter these studies coming at a time when numbers of High School Football players are decreasing. Last season there was nearly 10,000 fewer High Schoolers playing the game than the previous soap. Season. Still, football is by far the most popular team sport in high school. Youve turned on the lights and gave their biggest positiony man a name. Reporter dr. Julian bales, played by alec baldwin in concussion, a neurosurgeon and one of the leading surgeons on traumatic brain injuries. Sensors, smart helmets, having weekly hits is all important. Hopefully technology is going to be a big part of solving this concussion issue in sports. Reporter many agree nothing can eliminate the risk of taking a big hit on the field. Do you worry about facing one of these lifethreatening injuries on the field . Its in the back of your head. If you get hit you might think, that could be something. But you have to keep playing. Reporter for nightline, im ryan smith in pitsville, North Carolina. Next, an abc news exclusive. Barbara walters with donald trump and his family. The children telling us what donald. Even during the holidays, you get used to smelly odors you think it smells jolly, [inhales] grunts but your guests disagree. 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A family portrait with wife melana in their first sitdown interview together since her husband announced his bid for president. Our leaders are stupid. Stupid, stupid people. Reporter donald trump is a candidate like any other. Bing, bang, bong. You speak your mind and you have sometimes offended women, how can you unify the country when you make these divisive statements . Women respect me, they like me, they know im going to take care of them. Aim going to protect them. The people that are here legally, hispanics, like me because they dont want people coming in ask taking their jobs. Do you speak any spanish. No, this is an remember . Whats the downside of being part of the 1 of the richest people in america, especially when youre trying to reach the middle class . The funny thing is, im a rich guy but i have this great relationship with the working people of this country. And thats true. Reporter donald trump has always set the gold standard, literally, for life at the top. His 100 million trilevel penthouse is inspired by versailles. You have said that success is a kind of drug and its too powerful for most people to handle. How do you handle success . Well, a lot of people cant handle success. Ive seen it. To win. Reporter he shares this palace in the sky with his melania. Hello. Reporter she has been mostly absent from the campaign trail until tonight. Mrs. Trump, its a pleasure to see you and we dont see you that often. Trail. How do you feel about campaigning . There. I support my husband 100 . But we have a 9yearold son together. Barron. Im raising him ask this is the age he needs a parent at home. Were you involved in the decision of your husband to become president . We discuss a lot, yes. I encourage him. You did encourage him . I encouraged him because i know what he will do and what he can do for america. He loves the American People and he wants to help them. Reporter if the trumps win have two noteworthy distinctions. The first foreignborn first lady since John Quincy Adams wife louisa, and the first first lady to have posed in a picture like this. I dont know how to put this. Your ige looking the way you do, is that a liability for your husband . I dont think so. I dont think so. I think people will always judge. Maybe they will say, oh, the past that you have, the way you were modeling. Thats part of the job that i was doing. I was a very successful model. Reporter its been ten years since donald and melania said i do in a lavish affair at trumps miralago estate in florida. This is your third marriage, whats different this time . I think i understand life. Ive gone through tremendous amounts of everything. Deals, building companies, taking care of people. How does that help marriage . It hurts marriage because youre working all the time. Your husband has been married twice before. Might not work out . Concerns. We have a great chemistry. And to be with the man as my husband, you need to know who you are, you need to be very smart and quick and be there for him when he needs you. Equals . I would say, yes. I would say no, no, i think shes far greater than the 50 . No, we have a very a pretty much equal relationship, wouldnt you say . Reporter i wondered if melania has ever taken his husband to task on his tone toward women on the campaign trail. Did he make a derogatory comment attacking Carly Fiorina . I think women all over this country heard very clearly what mr. Trump said. You know your husband has come under fire here and there for making disparaging remarks about women. Does this bother you . It doesnt bother me. He treats everybody the same. About women only. Maybe they just go into a little bit more details when he says something about women. Reporter i sat down with Donald Trumps four oldest children. Donald jr. , 37. Ivanka, 34. Eric, 31. Tiffany, 22. Has your father ever said anything on the campaign trail that made you cringe . Truthfully, no. No, no, no . Hes true to himself and he speaks in a way that the average person can understand. Its refreshing for everyone. Reporter tiffany, trumps daughter by his second wife, marla maples, is a senior at her fathers alma matter, university of pennsylvania, with plans to go to law school. People are meeting you today many for the first time. To grow up with the name tiffany trump, thats not easy. Its all i know. Im so happy to be tiffany trump. So happy to be in the family im in, with my siblings, my father, my mother. Father taught them to respect the value of a dollar. To say we werent spoiled would be laughable but we were spoiled with great education, great experiences. We werent the kids showing up to college but a ferrari. We always had to earn whatever it is that we wanted. Reporter and it seems the donald trump work ethic is in their dna. We refer to it as the trump guilt. When we wake up on saturday and were not working. Your father has said he was not, using his words, very present when you were growing up. I would challenge him on that. Because he was very available to us. From when we were 6 years old, hed been negotiating with the ceo of a major bank or whatever, and he would make them wait, and take the call from us. Our times together were learning. No playing in his office. Hed sneak me down to get a candy bar in the lobby. Reporter its a very different side of donald trump. The soft one. Breaking from the daily grind to look at this, what a troupe. What is your father like as a grandfather . Hes been great. Reporter seems even the littlest trumps are already learning from grandpa. A few months ago, walking down the street, my daughter sees a large pothole in the middle of a new york city street. She looks at me and she goes, mom, grandpa would not like that. Is its very cute. Shes 4. Definitely genetics. For sure. What do you dream about most frequently . I have good dreams. Having a good life. Good family, good life. For many the white house is a step up. Im looking around this room. The white house might be a step down. The white house is the white house. Its just a spectacular place. And, you know, its something that represents something very special. And next, a teacher teaching powerful lessons, lifting spirits one student at a time. Youre fast, youre strong. Thank you for being a good student. Thank you. Dont even think about it. I took mucinex dm for my phlegmy cough. Yeah. But what about mike . He has that dry scratchy thing going on. Guess what . It works on his cough too. Cough guess what . It works on his cough too. What . Stop dont pull me spoiler alert she doesnt make it only mucinex dm relieves bothwet and dry coughs for 12 hours with two medicines in one pill. Start the relief. Ditch the misery. Lets end this. Whatcha doin . Just prepping for my boss party in a couple weeks. What are those . Crest 3d White Whitestrips whiten 25 times better than a leading whitening toothpaste. Someones making quite an impression. This holiday season, finally tonight, in class rooms across the country the school day starts with some routine. This florida teacher is showing us the true power of a morning message. I am here with all my friends. Weve been in the same special education classroom for three years. Reporter chris ohlmer, special ed teacher, whose unique teaching style is going viral. Youre awesome, youre great, youre fun, thank you for being a great student. Reporter he starts class with compliments. I think everyone in here loves you. Great job. I think id important that another. So i model that and whatever they see me do, that becomes their reality. I can lift myself up and get back in the running. Reporter his kindness curriculum has grown outside of the classroom. Seven months ago i started a blog called special books by special kids. And the reason we started that was so that the children in my class who have a variety of different conditions are now able to communicate with the world. My goal is to help people step inside the mines of these children. Because i think that their minds are some of the most pure ive ever seen. I love you too, youre a great student. It was the late Norman VincentVincent Peale who wrote an entire book about positive thinking. He believed a kind word could lift the soul and change the world. Thank you for watch. Tune into Good Morning America tomorrow. As always were online 24 7 at announcer the following is a paid presentation for hip hop abs brought to you by beachbhbody. Y close attention dont miss your chance to save 75 off hip hop abs. If y youre looking to shed the fat. In the first week, i lost 12 pounds. Announcer a way to flatten and sculpt your core. Youre hitting every part announcer and finally get those titight, sexy,oned abs of your dreams. Then stop doing situps. 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