Where do the children play?

Let’s talk about special school system here in Bavaria (Germany). Kids from specific area go to same school for the first 4 grades. Afterwards they are divided between little geniuses going into „Gymnsasium“, average ones going to „Realschule“ and good-for-nothings going to „Mittelschule“. For the first years kids move between schools and later between classes according their preferred specialization. No way to make friendships when kids come and go. Obviously there is nobody to play with left. Only reliable phone and games there. And nice videos there. Education system actively pushes kids into phones since real connections can’t happen.

I see lots of negativity here. Folks, do you really believe, that throwing a child into new environment every other year is the way to craft friendships in the real world?