Well, we have VERY generalised knowledge for 6 years (but that's obvious, it's for 5-11 yr olds), then again, learning everything for 3 years, just on higher level, but still low tbh. Then, the next 3 years is harder, you can choose specialisation and stuff. Everything is more detailed and e.g. you don't learn geography if you want to become a doctor :V
@and then depending on what kind of 3rd level school you selected, you can select some further ways of education.