Transcript for Stoneman Douglas students share their mixed emotions about returning to class
Going back to school in the Normal way is not possible. Going back to our Normal ways for anybody that went through this will never be the same again. Reporter: David hogg's morning routine is the only thing that will be Normal today. Members putting together a candlelight vigil. Reporter: He's a core member of that student-led never again movement. We do have a major gun violence problem in this country. We need a multifaceted approach. This is a time for people to look in the mirror and realize there's a serious issue. Reporter: His goal, to make sure a massacre like the one that happened at his school two weeks ago never happens again. But this morning the 17-year-old is laser focused on just getting to school. By no stretch a typical day when you have to take your kids back to school after a shooting. Reporter: In a few hours David and his freshman sister Lauren will confront a new reality. Lauren keeps saying I don't want to do this. And I keep saying we have to get through this. We don't have a choice. We're all going to school. I can't lock the back door. I'm like scared but also I'm kind of happy because I'm going to get to see some of my friends that I haven't seen in a while. It also kind of sucks, normally when we go to school, when I turn in, I see coach feis. He's not there today. And he won't be any other. Coach feis would wave and smile at literally every person that walked in. That will be tough for a lot of people. Reporter: Tough doesn't even begin to describe it for senior Sam zeit and his younger brother Matthew. They both were in the building where the shooting took place and barely managed to escape. I have no idea what it's about to be like when we walk in. Because you can't just go -- we can't go back to Normal. Reporter: Last week Sam was at the white house making an emotional plea to the president. I don't understand why I can still go in a store and buy a weapon of war, an ar. I was reading today that a person 20 years old walked into a store and bought an ar-15 in five minutes with an expired I.D. How it is that easy? So let's be strong for the fallen who don't have a voice to speak any more. And let's never let this happen again. Please. Please. I don't think we're going to be doing academic at all because we're not bringing our backpacks. Thank you. Have a good day. Thank you. You too. Reporter: At Stoneman Douglas today, a sea of police officers on site to welcome the students. Why do you think they're here? So people feel safe. Reporter: But for some of these kids and their families, the memories of the shooting still raw. I'm about to scream in rage, like it's hitting me. Reporter: Just two weeks ago -- There's an active shooter situation in south that. Reports are just coming in, but we don't have a lot of information. I was in my ap environmental science class when first gunshot echoed through the hallways. I hear at least nine gunshots. It was just one after the other after the other. You ran to get out of the line of shot as quick as we could. Probably the scariest day of my life. I took a book up and held it up like this. And I was holding it. It was just a defensive measure. It helped me feel a little better like I was safer. He kept shooting through the rectangular window. It hit two people who were near to me, one of my best friends, Helena, it hit her. We ran out of there with our hands up running for our own lives. I found out later that day that 17 lives were lost. Reporter: The principal hoping the students' return to school today can be a day of healing, tweeting that his focus today is on emotional readiness and comfort, not curriculum. The students' first stop, their fourth period class, the same period they were in when the shooting began. The idea, to allow them to spend time with those students they were with when the shots rang out. When I got into the classroom, it was kind of like everyone stared at each other and it got silent, then we reunited. Reporter: Teachers employing the help of therapy dogs. The freshman building where the attack occurred closed and it will never be used again. Today was a weird, strange, emotional day. Reporter: How so? In my Spanish class especially because one of our students didn't show up today because he was one of the 17. So that was very upsetting. Reporter: Another one of the students who wasn't at school today T 18-year-old meadow po pollek. She was my baby, my princess, everything. Reporter: Last week Andrew pollek's pain and anger evident at a listening session at the white house. His two sons beside him. We're here because my daughter has no voice. She was murdered last week and she was taken from us. Shot nine times on the third floor. All the school shootings, it doesn't make sense. Fix it. It should have been one school shooting, and we should have fixed it! And I'm pissed because my daughter I'm not going to see again. I was giving it to the president. It was everybody as a nation. That's what I was saying. How can this happen? My son's friend put this together. Reporter: He's channelling his grief into action. I have the heart of a lion here. Nobody could stop me. Nobody. We have the opportunity to be in this country and be proactive and fix it. That's about what meadows movement is. Reporter: He's skeptical that any federal gun control legislation will pass. Tomorrow I'm going to the white house and I don't really even know why. Reporter: Though he does remain hopeful that some measures proposed by Rick Scott will be successful. We have to get something done. We have no -- there's no alternatives. The bill is very important for school safety, for mental illness and for the Meese. Friday and Saturday I'm going to be back in Tallahassee at the state capital meeting with people who will decide whether this bill is passed or not. To think about the loss and the grief that those kids and the parents had, we said we need to do something. And we're taking all of these guns out of all of our stores permanently. Reporter: Today dick's sporting goods announcing that his stores would no longer sell automatic weapons. They'll no longer sell high capacity magazines. We're staunch supporters of the second amendment. I'm a gun owner myself. But we've just decided that, based on what's happened and with these guns, we don't want to be a part of this story. Reporter: Now Walmart also raising the age restriction to 21 for firearms and ammunition as well. Back at Stoneman Douglas a remarkable 95% of the student body brave enough to come back to school today. And after they finished their day,#a small sigh of relief. We're jus like comforting each other, talking to each other. We hugged most of our teachers if not all of them. They gave us speeches about how they're here for us. Reporter: So what the principal said, this is about the healing process, he meant it. We come first. Reporter: Reporting from
This transcript has been automatically generated and may not be 100% accurate.