Active recall: how much did you actually retrieve?
A blank-page recall session means closing the book and writing down everything you can remember before checking it. Once you mark the page against the source you have a count of what you retrieved, and dividing that by the total number of items gives your retrieval rate. Enter the total, how much you wrote, and how much was right, and this page works the rate out to one decimal place.
The useful part is that items written down but wrong are counted separately from items never retrieved at all. They call for different fixes: the first group usually means two concepts are blurring together, while the second simply has not been learned yet. Items you only half remembered get a weight you choose, reported as a separate weighted rate, and entering a target tells you how many more items you need, rounded up.
This page summarises the session you just finished; it does not predict how much you will still remember in a few days. Forgetting runs at different speeds for different people and subjects, and there is no sound basis for putting one number on it. Instead, run the same range again at your next review and compare the two retrieval rates to see the change.
Frequently Asked Questions
The plain rate counts only items recalled fully and correctly. The weighted rate adds partially recalled items multiplied by the weight you set, so leaving the weight at 0% makes the two figures identical.
This page cannot answer that. Forgetting varies by subject and by person, so no single figure would be honest. Re-running the same range at your next review and comparing retrieval rates is the reliable way to see where you stand.
When the number of fully correct items equals the total, the retrieval rate reads 100.0% and the target is marked as reached. A rate that lands exactly on your target also counts as reached rather than short.