These are complex topics usually taught in the first year of college or advanced high school (AP Calculus AB/BC).
Level L is widely regarded as one of the most challenging levels in the Kumon program, often tackled by students who are working several years ahead of their school grade level. Math Program: The Gateway to Calculus kumon level l solution book
Mastering High-Level Concepts: The Kumon Level L Solution Book These are complex topics usually taught in the