Montessori is built specifically on these principles, and is widely adopted [citation needed ;-)] by parents of gifted kids who struggle with the grind of the regular school systems. (At least, in the western world).
Also, home schooling is growing in popularity in many progressive countries, largely to cater to child-led learning.
I have great memories from a Montessori School I went to as a kid. Spent most of my childhood education there. It was a big house, each room was dedicated to a subject and students would change rooms, big shared tables and very few students per room. I also don't remember grades or at least no focus on it.
When I got to a normal school it was one big room packed with tiny individual chairs, all classes happened in that room, everything was easy, suddenly I was a "top student" and grades were a carrot to chase after. I didn't turned out exactly a Noam Chomsky but I find it funny he had this same experience while going from an alternative education to a traditional one.
Also, home schooling is growing in popularity in many progressive countries, largely to cater to child-led learning.