High school is mandatory
Most of your classes are arranged for you.
Classes generally have no more than 35 students.
Teachers remind you of your incomplete work.
Teachers approach you if they believe you need assistance.
Teachers are often available for conversation before, during, or after class. Lecturers expect and want you to attend their scheduled office hours.
Teachers have been trained in teaching methods to assist in imparting knowledge to students. Lecturers have been trained as experts in their particular areas of research.
Teachers provide you with information you missed when you were absent. Lecturers expect you to get from classmates any notes from classes you missed.
Teachers present material to help you understand the material in the textbook.