I have a hunch (definitely not an assertion) that even if there are effects from Montessori school early on, they wash out over time, and the major factors afte

I have a hunch (definitely not an assertion) that even if there are effects from Montessori school early on, they wash out over time, and the major factors afterward are socioeconomic status and habits of parents, and subsequent education (K-12). I guess I'm paraphrasing Freakonomics.