If that's a joke It's really not funny.

It is not I promise

Alert the authorities??? Joke or not, these types of situations should not be taken lightly.

I know this is not a joke 2 security guards were outside of my school tomorrow I will take a screenshot if you would like.

This can't be true

It is I promise I am not lieing ask anyone I know such as my cousins.

The are investigating it thought I think I am good

it's a joke. If the damned guy says it isn't, it is. Call police or the authorities and he'll get arrested for threats or if he meant it, attempted assault/murder

the school is on investigation I think were good

ok