Hi Khan Academy! A slightly niche feedback on your exercise software.

Consider units with a LOT more skills than one unit test attempt can cover. In such cases, it's common for some skills to appear in one attempt of UT, others in another.

But in cases where I've mastered all but one or two skills, I've noticed that sometimes the UT or Course Challenge doesn't give those unmastered skills, and I'm having to re-take the test to master those skills (if Mastery Challenge isn't immediately available).

For such situations, can you train your algorithm to always push un-mastered skills first in the UTs and Course Challenges of big, many-skill units/courses?