The Zombie Apocalypse (School Version)

It's just a regular morning at school... boring, dull, and completely uneventful. However, the day would soon take a turn for the worst. While you're in class, a student covered in fresh gore stumbles in, then sinks its teeth into the stunned teacher's neck. Your classmates begin screaming uncontrollably, horrified as the bloody student rips out chunks from the gurgling teacher's collar, too busy feasting on flesh to notice you... for now.