Probably should have posted this in the homework help section
My English skills aren't in tip top shape as all I achieved was high school level (math FTW). Anyway..
"except for one class I loved, and enjoyed" - I don't think there should be a comma there.
"I just amaze me how tiny electrons can be pulled through a pathway" - should be: It just amazes me how tiny electrons can be pulled through a pathway (and they aren't pulled through they are pushed, the battery releases the next electron which then pushes the ones in front, but that doesn't really need to be correct if it's for English)
"My activities in school also reflect my willing to volunteer outside of school." - willing to willingness?
I'm going to stop there as I'm tired, it's nearly 2AM and I have uni in a few hours. I'll look over it when I get back from uni and see if my corrections change lol