Our son was going downhill in Montessori after a few months because he had exhausted all that they had to give.

When he turned 3, Mr W was learning to read and do simple math and complex puzzles, but they had none of that at the school for someone his age nor was that offered in their K program.

The teachers were fabulous and the school was great. But they were geared to ND kids, not MG/PG kids.

I just want to caution people that they need to be focused on the kids and not drink the school's kool aid.

The fact that "Montessori is not for everyone" is a Red Flag in my mind. Its a loaded statement meant to spin bad outcomes regardless of the reason.

In retrospect with our experience it means, "Your kid will not do his work like the others therefore Montessori is not for him." when the problem was it was not developmentally appropriate for him to do the equivalent of 15 piece puzzles.