I think that this is a very good opening paragraph. I can clearly tell exactly what your writing piece will be about, and it definitely hooks me in as a reader... GOOD JOB!
I have no idea what AP English 11 is like.
I think AP Bio is a difficult class to take. Bio may seem easy, but AP Bio is a whole different world. I would not recommend taking it unless you have a very good work ethic and you enjoy biology.
Don't take an AP class just to take one, choose one that you are intrested in.
It implies that they are upset by the buzzer.
As one comes closer to the understanding of poetry, then one becomes more able too apply their understanding to their own spiritual being. Robert Frost was able to create his own beliefs based on his experience with studying and writing poetry.