Talk in Assembly

My teacher said...

“If you talk in assembly
It's a crime you're committing
If you talk in assembly
It's a sin
Such a serious matter
Do not natter
Do not chatter
If you've words in your mouth hold them in

If you talk in assembly
You'll receive a detention
If you talk in assembly
That's not good
Close your lips like a shutter
Do not mutter
Do not utter
It's a rule that must be understood

If you talk in assembly
Then expect to be punished
If you talk in assembly
You are bad
I suggest you don't blabber
Do not jaw
And do not jabber
Or the Head will meet your mum and dad

If you talk in assembly
You will end up in trouble
If you talk in assembly
Please refrain
You've been warned, do not gabble
Do not blather
Do not babble
Now I'm not going to tell you again!”