[karles]

I'm just stating the facts. But let me explain how the educational trajectory looks like. Sorry I don't know the correct terms for all the different levels of education. But here goes:

Age 2-6: Daycare/kindergarden

6-16/17: Grade School (folkeskolen)

16/17-19/20: High School (gymnasiet)

19/20-20/23: One or two years off where people work/travel/move out from their parents etc. (as you can see, we're close to the 22 year average here)

20/23-25/28: 5 years of university - add one year for the standard extra interships and you have 6 years of university

Fastest possible way: Start school at 5, skip 10th grade, just straight to High School aged 15, finish high school aged 18, straight to university and study for 5 years (fastest possible degree in the regular system), and you're 23 by the time you get out of the system.