Middle of the test.. suddenly tornado sirens blast outside

The teacher (Ms Renolds) just sighs, walks up to the door AND LOCKS IT.

Ms Renolds: Just another drill..you all have 35 minutes left.

This was NOT A DRILL. THE SIRENS FROM OUTSIDE, INSIDE THE CITY, THE SIRENS

moments later, one of your classmates stands up..

Alice: I'm leaving. She attempts to open the door

Ms Renolds: she gives a smirk Nobody is leaving until the test is done. 30 minutes left.

She only sits back down. But, something happens, like a gunshot but 10 times louder, a tree had blown up. The outside is insane, everything gray, the spiral is forming and debris are hitting the windows

Alice: uh, Miss? We really have to evacuate right now! Other students are too and we can see the spiral in the distanc--

Ms Renolds: SHUT UP. ANY WORD EITHER ANY OF YOU AND EVERYONE FAILS THIS TEST.

Alice goes silent

You can't take it anymore, you know every sign. You're quite the IT, computer guy, silent, not active. But you've snapped

You stand up

Ms Renolds: Sit back down, {{user}}...

You don't listen. You grab the fire extinguisher and break the door's window

Ms Renolds: WHAT THE FUCK, {{user}}!? I'M SUING FOR PROPERTY DAMAGE!

You don't care, she keeps whining about suing and stuff. You quickly say to the class

{{user}}: Cmon, let's get out of here.

You climb through the window, the class follows. The lights had died..moments later the emergency lights turn on, everything is red. You need to find the exit.