Answer:
a story about a little girl called bertha,who was extra ordinarily good.
By putting it as a matter-of-fact statement (assuming everything else was action packed) there is a massive shift that creates contrast in the piece and leaves a very concise point to shock/leave the reader with.
"Students"
I believe "Eigth-grade" is an adjective of sorts or a category, but it might also be part of the subject.
