Prinnie "The article cited the German system as a good system where you have 3 tiers of school"
The German system has been much criticised within the country itself. It may not be as chaotic as the current mess in the UK, but it's just as unfair.
Reliable studies (from the OECD) have shown that if two children have the same ability, the child from an academic family is more likely to be sent to a grammar school and the child from a non-academic family will probably land up in the middle or lower school form.
Theoretically the school forms are transparent, so that there is movement between them if a child shows more promise etc. In practice there is only movement downwards, and moving a child into a lower school form is used as a punishment for persistent bad behaviour.
In most federal states in Germany, pupils only spend four years in junior schools before the selection is made. So pupils from poorer families go to school at 6, perhaps with no reading or numeracy skills, and have very little time to catch up. It's no wonder that background is a much greater factor in determining which school form a child goes to than the child's ability.
The lowest school form, the Hauptschule has been totally discredited. Traditionally the kids there would go into 'unskilled' work which needed little training, but now the kids in the middle school form (Realschule) are taking those jobs. So the kids in the Hauptschule, who are overwhelmingly migrants, end up unemployed and disaffected. The problem is so great in Berlin now that the lower two school forms have been joined together to lessen the 'stigma' of having been to a Hauptschule. Ideally all three school forms would have been merged to create comprehensive schools, but the grammar schools had too many influential parents who objected.
Selection is not the solution.