We made an update to Khan Academy's Precalculus course that enabled mastery for a few units that previously didn't count toward course mastery.

The following units became Mastery-enabled:

• Series
• Limits & Continuity

With this change, students will have more opportunities to practice and demonstrate mastery of skills throughout the course.

Will this affect my mastery progress?

Some students may notice a decrease in their overall course mastery percentage of up to 30 points as these additional units begin counting toward course mastery.

This change does not remove previously completed work or accomplishments. Instead, the course mastery percentage may be recalculated to account for the newly mastery-enabled content.

We expect the impact to be relatively modest, but the exact change will depend on each student's existing progress.