I viewed two Montesorri schools for DD - one "proper" Montessori as in it sticks to the original concepts. The other used a Montessori set up but incorporated some aspects of EYFS (early years foundation stage) also.
I thought I'd love them. I really didn't.
The whole premise is learning through play, which was revolutionary at the time, but now the rest of the system has not only caught up but overtaken it IMO. When the Maria Montessori started teaching her method at the beginning of the 20th century I have no doubt it was revolutionaly and light years ahead of the rigid school system of the time.
But times have changed. EYFS is all about learning through play.
I found Montessori surprisingly structured. I stayed and observed for an hour and a half and I saw children encouraged to explore for themselves - but only within narrow confines.
The tables were for one. Children could choose their own activities but then they were encouraged to site at a table or on a mat by themselves to do thier "work".
Twice I saw children come together to play but they were gently discouraged. Once two girls started playing a peek-a-bo game with one of the mats. They were encouraged to stop this and return to their activities. I felt sorry for them that they weren't allowed to just be, they were having a lovely time and learnign about socialisation o thier own terms.
Another time, two children started dancing. The teacher said "everyone, let's dance" and got the children to stop what they were doing - including the two who were dancing. They formed a circle and got all the children to take turns in going into the middle to dance. Which was fine for the others, it was a nice thing to do - but again the children who were expressing themselves naturally on their own terms, were prevented from doing that and their play was formalised.
In the other school, the non-purist one, they explained that they blend EYFS, introducing things that "pure" Montessori schools don't to like role-play and allowing books with animals characters in.
They pointed our that Maria Montessori was a pinoneer of her time and they believed that were she alive today she'd update her philosophy accessing the latest research, not stick dogmatically to ideas that are 100 years old.
I was disappointed that neither of the settings offered the DCs free access to the outdoors - playtimes happened in a structured way. That's not up to date thinking for early years.
There are some awesome state nurseries and reception classes out there. EYFS really is a child-centered structure, with learning through play at the centre. A lot of the things Montessori claims to be, you will find done better if you have an exfcellent nursery or school near you that embraces EYFS IMO. (Or whatever the lasted incarnation is called!).
Letting children be independent and cut with knives for example, isn't new or revolutionary. My state-run nursery made a big deal out of that kind of stuff too (so my parents tell me) and that was 40 years ago!