I went to a Montessori kindergarten and I'm sure to this day it must have been the best kindergarten in the world. I remember one single time that I felt uneasy there because I had to stay with another group for some time, and the lady in that group was thought to be rather strict. I did whatever I thought I was expected to do and probably didn't look too happy, for at some point she turned to me to tell me, "you don't have to do that, y'know, it's totally up to you". For a kid too shy too ask that was a great deal. It still counts in my life although it's half a century ago. Thank you Mr and Ms Montessori.