dr. harmon at his red bank valley high school students. >> there it is, red bank valley high school.oing all the way down on the left. poetically, he is in room 100. >> hello. >> hello. >> reporter: this is not the first time "nightline" has walked these halls. back in october terry moran visited this school when they were having their own mock election. one of the biggest issues they were concerned about here, jobs. >> when you asked how many of you have been affected by job loss? can you do that again? how many of you? pretty much everybody. >> reporter: trump won them over, so now 100 days in, we're taking their pulse. how do you think he's doing? >> he wants to do a lot for us and make us feel secure and protected. >> how many in the room know people who have lost their job? that's pretty much everybody. >> my grandpa has actually lost his job going to the coal mines. >> do you think president trump can do something about this, bring back the industry? >> it seems like he's trying his best to bring back all the jobs that have been lost. >> reporter: according to the bureau of lab