But the school halls were a battleground

from Shane Koyczan – To This Day on Rap Genius

Meaning

The halls were full of kids who would laugh and taunt, brawl, bully, etc.

Like this, but not as entertaining:

https://www.youtube.com/watch?v=WPYqRaOm1ak

To help improve the meaning of these lyrics, visit “To This Day” by Shane Koyczan and leave a comment on the lyrics box