What if a high school (or middle school) didn’t give grades, didn’t have a structured curriculum, and allowed students to design their own courses? I think most people will read that and say, “Obviously it can work or you wouldn’t ask that question.” Then they will tell you, “but I don’t believe in it”. St. Ann’s Website.
And that’s pretty well where it is. Most people don’t believe it. The same way most people refuse to believe that the crime rate has been declining for 10 years. Here’s a New York Times article about the school, and a lengthier article about the visionary founder.