When will it end?

When will it end?
I have thoroughly inspected my response.
How I want to hear,
My superior guard uttering,
"Time's up. Stop writing!"
Yet the pencils still scratch the sheet,
"I said stop writing!".
All is quiet,
But expressions are clothed with frustration,
And withal that,
It's the moment that we inadvertently,
Heave a sigh of relief and of worry.

When will it end?
I have put down my utensils,
Anticipating, eager and excited,
Still time creeps with the same pace.

Now I see the guard standing up,
Again I ask,
When will it end?
He walks to the front,
And out the words that I've longed for,
"Alright class. Time's up. I'll come collect the answer sheets now"