I was homeschooled, but we used a lot of Montessori principles for that age range. Completely recommend. I can echo the other comments already here about how I think it strongly promoted curiosity, independence and a love of learning, at the cost of some 'social adaption' - for me, mainly when I went to university and everyone had shared experiences that I was missing, but overall totally worth it IMO if the Montessori school is good.