High school and college have different levels of education but both aim to further students' knowledge. Some similarities are that they both have classrooms, assignments, and students. However, there are three main differences - teachers, classes, and responsibilities. In high school, teachers provide more structured lessons while professors typically focus on tests and papers. Class sizes are smaller in high school than college. Additionally, high school has more structured time and responsibility while college requires more independent time management and responsibility over one's schedule and studies.