Some Kumon official books suggest that their content is slimmed down, streamlined and minimalist. It 's designed "top down," with the end in mind.
The end is towards to High School materials.
I wonder why they don't extend it to life after university.
eg. You dropped out like Steve Jobs, or Zuckerberg, or Larry Ellison, or Bill Gates.
e.g. You didn't even get to the uni like David Karp ( founder of Tumblr), or Matusshita or Andrew Carnegie.
e.g. after your PhD's like Feynman or Kerry Mullis or Robert B. Laughlin.