Okay, good answer. But the problem with this (according to generalizations I can draw and a few observations I've made) is that it caters to those who I would call for want of a better word, losers. Slackers. Kids who don't give a shit. Just imagining my average high school acquaintance -- a few would positively thrive, and the rest would crater. It encourages a lack of order in life, and as you point out, the rest of the world is about order. Going to college from a Montessori would be like moving from a Greek island to Manhattan. In my opinion, that's why this sort of educational system will never catch on widely. I firmly believe children should attend public school for the social immersion, though, so I'm on the extreme end of this question's spectrum.
Yeah, I know what you're saying. Going to this sort of school does promote a sort of chaotic lifestyle. But, I think that might be a good thing to be honest. In a world with so much order, it might be nice for people to let loose to some extent. Perhaps education is too much of an extreme to accomplish this, but I wouldn't denounce living a somewhat chaotic lifestyle. And actually, both slacker as well as overachievers excel in Montessori schools.
That seems a bit more accurate. I'll talk to my girlfriend about it tonight who is in the teaching business.