I can start!
Of course. The one day Kat hadn't finished her homework for was the one day her professor wanted to collect it; that was just typical.She took a deep breath and raised her hand, trying to come up with something to say that would distract Professor Reid. But right as she began to speak, a blaring noise arose. It was like all the fire alarms, clocks, and some awful other thing were going off at the exact same time. Professor Reid, grimacing, motioned his students outside confusedly, and they walked towards the doors only to be faced with a stampede of frantic other people in the college going the opposite direction. Kat caught the arm of Miles, a boy from her same major: "What's happening?" she shouted. He still didn't seem to hear her, though; he yelled back something that sounded like "Zombies!" before wrenching himself away and again down the hall.
As Kat resumed her own path, she found less and less people going outside and more retreating further within the school. And soon enough she found out why: in the entry hall was streaming a gaggle of slumping, gray-faced, and, believe it or not, blood-splatted individuals groaning. The first one to notice Kat groaned awfully, and the rest followed her lead to face Kat. The zombies-- (surely that's not really what they were, zombies weren't real, of co---) but she didn't have time to think. Whatever these people were, one of them was about to get into touching range to her, and it didn't seem like he was trying to hug her. Kat ran.
She thanked the universe for having run track and field in high school; she was able to lose the zombies as well as another couple of them who she happened upon coming out of the science room, and went into the basement. This is where they went for tornado drills, right? It was at least hidden away and sturdy enough to regroup and make a plan in. Down the stairs, Kat found a handful of other students, one of the professors, and two housekeepers had had the same idea as her. And, finally, the alarm was dimmed down here. You could still hear it, but it was no longer deafening. "See? I told you?" said one of the housekeepers, "If we closed the door, she wouldn't have had somewhere to escape to!"
"I know that, and I'm glad all of us here have gotten safe for now, but the zombies will get here soon enough and what happens if they come down!"
"Let's be ready to let more survivors in, but also to defend ourselves," Kat found herself suggesting. And before she could process what was happening, she and some of the more physically fit humans there were standing on the staircase, armed with a hairspray someone found, a pocketknife, the stem of a lamp to swing around as a club, and other makeshift weapons. Kat had never fought before, especially not in a situation like this one. "I have to make it somewhere else," she decided, "When I get the chance, I'll get out of school and go somewhere more stable. Assuming I survive today."
And then she tightened her grip on the pocketknife, as confused footsteps approached them. It sounded human, but Kat didn't want to take that chance to let her guard down for the worst. Had someone else gotten onto campus? What was it like in the rest of the city? Yesterday had been so normal, half an hour ago had been so normal. Maybe someone in the rest of the city had run into there? But now whoever was here turned onto the staircase.