Bishop's Robes lyrics

Dressed in bishop's robes
Terrifies me still
In bishop's robes
Bastard headmaster
I am not going back
I am not going back
I am not going back

Children taught to kill, to tear themselves to bits
On playing fields
Dressed in bishop's robes
I am not going back
I am not going back
I am not going back

Submitted by Guest

What do you think is the meaning of Bishop's Robes by Radiohead?