Good etiquette in class can help you make the most of your education.
If you're in Code Fellows, you're likely at least 18 years old—the age at which you're legally considered an adult. You may not feel like a responsible grown-up yet, but your instructors will assume that you are. So act likewise.
Before you say or do anything in the classroom, ask yourself "How would a mature, well-adjusted, courteous adult act?" I promise that doing so will save you from embarrassment and engender the respect of your classmates and instructors.