Answer:
They need money to live
Explanation:
From Stanza four of the poem, "the man he killed", when the speaker could not find any reason to have killed the man he went into battle with, he justified himself by saying he enlisted in the army because he could not find any meaningful thing to lay his hands on. He said he joined because he knew nothing else to do and joining the military was a last resort.
"He thought he’d ‘list, perhaps,
Off-hand like — just as I —
Was out of work — had sold his traps —
No other reason why."
Yes, I agree you have to look at your own school.
First, ask yourself: is there bullying in your school? (I can give you an example of my school: there wasn't)
Then ask youself: how can you know that there is? what have you seen? have you seen people crying, being beaten, being forced to do something they didn't want to?
And finally, look into the reasons - i can tell you that my school was so small that we all knew each other's parents, so noone would bully someone while knowing their paretns so close.