Getting through 4th period

4th period is always a toss up,
they can always go either way.
Sometimes the class is a little rough,
but sometimes this is the highlight of my day.

Some of my smartest kids are in this class,
but overall their average is really low.
there are a few little girls in here that are too fast,
and few who just plain out NEED TO GO.

Trenell talks to Carlos for 46 minutes,
When Silva is here he is always talking.
Arnez, James, and kevin are always present,
And the trio of girls won't stop squawking.

Quach always comes to visit,
if this clas isn't random, what is it?