Opening Sequence (Idea 2)

In a detention, teacher goes out

(10mins later) massive bang

gets up, look through door window (view of legs)

goes out to investigate, dead body (teacher)

back to the room to get the phone, picks up the phone

goes back out, teacher at the door

slams the door shut

goes out the back door

back gate of the school locked

goes to the front gate

park, walk towards the bench and sit down

walking dead appear from behind the bush
run up the slide
find a bomb
throw it
flashing of light
walking dead gone

DEAD RISE