In some cases there can be hundreds of students in a class or lecture. In a smaller college, class size can reach up to the fifties or a little larger, but mainly they will be similar to your high school classes. In high school, teachers are usually good at accommodating a student's request for extra help. At a bigger college, teachers may not be able to offer extra help because they have so many students and their schedule doesn't really allow for it to happen. Professors at smaller colleges will be able to help students more because they won't have as many students to worry about. Most of them will have set office hours where they will be free for extra help. As you go deeper into your major, you will notice that your class sizes will start to decrease because those classes become more specialized to what you are studying. .
Although you still have someone teaching you, there are many differences from high school and college teachers. For starters, in high school the person who teaches you is your teacher, but in college they are called professors. In high school, the teachers would teach from a powerpoint, make you take notes, pass out some class work, and finally some homework that will be turned in the next day. In college it is mainly lectures and notes with very little to no classwork. Most of the professors do not use powerpoint during their lectures; although, they may write information on the white board. The classes are also a lot more comprehensive and harder than high school classes. The homework that is given in college is mainly long chapter readings and projects that aren't collected until the day they are due. There are a lot of small grades in high school that can boost your grade. Usually the only grades you receive in college are exams, quizzes, papers, projects and the occasional classwork. So really there is no room for messing around in college like there is in high school.
