Germany is good at training its workers mostly because of one the last if not the last industrialized country in Europe.
UK and France thought industry as dead decades ago and lost their know-how by moving plants overseas.
Meanwhile Germany has kept his knowledge in-house and trains the best technician, ingenieur especially in machinenbau (mechanical engineering).
A decade ago at the KIT, machinenbau graduate were most sought-after by companies than computer scientist.
(btw I'm french)