It's good to strive for the best grades you can.
Jessica has been accepted to college and chosen a subject for her major.
Jessica wants to take some classes towards her degree.
Jessica decides to do well in her classes, so she studies and does all of the homework.
Jessica pays more attention to her friends than her classes and doesn't study for her exams.
Jessica gets good grades and is well on the way to earning her degree.
Jessica ends up failing her classes and drops out of college.