Hi Musa,

Khan Academy does have content that is traditionally taught in grades 9-12, but the courses are no longer labeled by grade level. In the U.S., grades 9-12 are typically part of high school, so the classes and courses become a little different than previous grades.

In most high schools, math classes for grades 9-12 are taught in the following order: Algebra I, Geometry, Algebra II, Precalculus/Trigonometry. To continue with your learning, I suggest starting with those courses.

Hope this helps! Please let me know if you have any further questions!

Thanks for the tip!