The obvious result: everybody is worse off. Disabled children are not properly accommodated and the performance of the rest of children suffers because of everything going slower. And all the responsibility of dealing with the situation falls on the teachers, who aren't adequately equipped.
No need to be a nazi or anything to see why that's a bad idea. Of course, the left destroying public education is nothing new.
Anyway, back to your comment: we were talking about the perception of Germany from outside Germany.