Montessori is becoming more and more popular today, or another way to say it involves a lot of marketing. Since it's not a trademark, anyone who studied for a short period of time and obtained a certificate can work or even open a montessori school. But usually AMI has better reputation. Association Montessori Internationale My friend knows some montessori teachers. They say Some montessori schools are really no better than a daycare, but charge parents a lot. The teachers have very low pay, but the one who's running it making big bucks. They have good marketing strategy and the parents buy it, that's most important. But then there are very good montessor schools. By the way, Bush and a few hollywood celebrities attened montessori school.