Not directly, but some of my students the last years came from these schools. They tend to be more creative and have good social skills. And I know some teachers at Steiner in my hometown, great people. 
If a kid shows interest in something, they get the opportunity to dig deeper into it. The teacher is not a slave to the standard curriculum. If a boy feels it’s more important to work with wood than to learn algebra, then maybe that’s what he should spend most of his time on?