Alternative schooling goes by different names such as democratic, alternative, holistic, open-concept, child-led, gifted education as well as the two you already mentioned. Waldorf is the fastest growing school movement in the world. I have experienced Waldorf a bit and found it very enchanting. It was very colourful and a whole lot of fun. The Montessori school I went to was a great concept, but unfortunately due to the high tuition costs made it only affordable for the super rich. They also accepted a bribe from my cousin to allow her child to take priority in erollment. Maria Montessori's methods are excellent and it would be beneficial to read about them for yourself.
My son went to Caraway in Edmonton, Alberta. It is a holistic school which uses open concepts and the project method. It is a community of parents rather than teachers in front of desks. My son absolutely loved it there. It may be worth it to check out their website.
A man in Vancouver started a wondertree, with the program SelfDesign. He started it for his daughter and it has been going for over twenty years. They do online learning and have homeschooling resources as well as workshops. The founder, Brent Cameron has a book called Self Design: Nurturing Genius Through Natural Learning. I highly recommend this book for anyone interested in alternatives to education. You can also email the author if you have questions and he does respond.The school is doing some amazing things. Here is the link:
This is a list of alternative schools all over the world, they refer to these ones as democratic schools
Currently my almost eight year old, is at home and we are unschooling. The public school system was destroying him and ruining his love for learning. Now he is free to learn what he wants AND he is learning much more than the public system could teach him. We are hoping to move to a farm soon so we can invite other families to come and bring their children to unschool/deschool them. Eventually we would like to start our own school or unschool....
There is a man right now by the name of Sir Ken Robinson who is making changes to the education system. He has some great things to say.
I could go on forever on this topic! I hope this has helped and I would love to hear about your experiences!