Well, it is different system here and in Germany. Vocational study or technical high school is limiting your choices of uni and career paths.
Post high school you either go work (you already spent few years on the job during school) or uni.
There are tons of jobs that are closed to you when you choose wrong path at the age of 14 or 15 and it is really hard to change the tracks.
It is good system for manufacturing companies and economy, but not that great for some people.