Child care

My current job is a school janitor. (he says with much embarrassment)
Recently when I clean the library, there is a woman looking after 3 or 4 kids of around 5 or 6 years old in there at the same time. After school care.
I cant help but be glad I am a cleaner and not looking after those kids. Noisy, running around, short attention spans. That woman deserves triple what Im earning. Truth is she earns about the same. She does a good job under the circumstances, respecting their freedom. But her voice is being used all the time.
"Bobby put those blocks away."
"Johnny stop running. you'll hurt yourself."
"Ok guys, next we gonna play cards. How does that sound?"
'Mark. I hope you are not being naughty. Come here where I can see you."
This goes on and on for ages.
I was thinking to myself here is an opportunity for writing. But then ive wasted it by telling you instead of showing. one of the writing golden rules already.