You cannot learn if you are not in class. Your professor may take your presence and participation into account when evaluating your final grade in the course. Your attendance may be the crucial factor in determining whether you get an A or a B if your percentage is borderline. Getting involved on campus can make all the difference in how you'll look back at your college years. It will make your stay here more enjoyable.
Research says that students who sit in the front of the class get better grades.
It is easier to focus on what is being discussed. Keep up with your assignments and readings. Look over your notes regularly and revise them. If you are going to miss an exam or class, try to let your professor know ahead of time. Get the phone numbers of at least two other classmates just in case you miss a class and need notes.