Classes are different at tertiary level. If your secondary school had a small year 12, you will find much larger class sizes. You'll have lectures of about 400 students, and practical sessions with 60 in the class. So you won't have much individual attention from the teaching staff. Most first year engineering students have about 16–25 hours of lectures, pracs (practical laboratory sessions) and tutes (tutorials) every week.
MY FIRST DAYS STUDYING
‘Compared to just about any school, universities are huge! Most have 10 to 20 times the population of your school and more services than a small