You see it already in the elementary schools. In Germany, specifically, where you have different schools systems like and Hauptschule, Oberschule or Gymnasium,

You see it already in the elementary schools. In Germany, specifically, where you have different schools systems like and Hauptschule, Oberschule or Gymnasium, quite often kids that don't qualify to Gymnasium have parents that don't get involved in school topics, don't control home work, don't read with their kids, etc.