Khan Academy is missing a few crucial things in it's AP World History Course. Yes, it does outline most of the history, although it may need to add more due to the College Board's recent curriculum change to the course (they are going 200 years back). If Khan Academy had a few Document Based Questions, Long Essay Questions, and Short Answers Practice questions, it would be helpful as it would students a simulation of the exam. They can use the same software that is used on the SAT Essay Practice Question. 

A suggestion for all AP Courses offered on Khan Academy, make a practice exam with College Board approved questions, Khan Academy did this on their SAT prep, why not add it to AP Courses? The exam will have the same grading criteria as the exam does and can give a possible score of how you would do on the exam.

As an incoming sophomore and an exam to take next year, it would be highly suggested for Khan Academy to add what I suggested into the future into AP World and other AP Courses.