I used to never have to worry about the quality of my homework. Unfortunately, that has now changed. Ever since I entered high school, some teachers have taken points off my homework for the most trivial things.
Now, I perpetually worry about not showing enough work even though I completely understood a math problem, or forgetting to put page numbers on my MLA format paper and subsequently getting half credit on the entire essay.
Sometimes, I understand where teachers are coming from when they dock points for minor infractions on our homework. They want us to understand the material we learned in class, but taking off 10 points from a 30-point assignment just because we did not correct our own homework with red pen does not help us learn.