Student progress is changing from "Practiced" to "Struggling". This severely limits the usefulness of Khan Academy as this is how I track which students understand math concepts.
Example: A student of mine (Username: Themoka) has a screenshot of "Amplitude of sinusoidal function from equation" and "Extend geometric sequences" being "Practiced". Today when he came to class, these exercises were marked as "Struggling".
Any help is very much appreciated.