The one time in twelve years that I have evicted students from my class was when two young men were snickering at students as they gave oral reports. This behavior can land you in front of the Dean of Students and may lead to suspension. Angrily confronting the teacher. Spend time understanding the course syllabus and requirements from the start to cut down on later misunderstanding. Some teachers are laxed about attendance, for example, while other teachers have zero tolerance for tardiness even to the point of locking the classroom door.
Some teachers accept late and makeup assignments, while others don t.
If you meet with the teacher as problems arise you will avert problems. Attending college classes should be stimulating, informative and sometimes even fun, but only when the environment is conducive to learning. While teachers have varying levels of tolerance for various classroom behaviors, you can make your own college experience enjoyable by showing courtesy and respect toward your classmates and teachers alike.