Dr. Montessori never trademarked the name Montessori nor did she claim any patents on her methodology. The result is that there are many Montessori schools out there claiming to be the real thing. Some schools may include elements of Dr. Montessori’s methods and philosophy in their teaching. Other schools quietly sublimate the parts of Dr. Montessori’s thinking which aren’t perhaps appropriate in their setting. In short, there almost as many flavors of Montessori as there are schools. Not a bad thing in itself, but as always, do your due diligence.