We capture when users log in and out of the platform. A few caveats here: Since many users do not expressly logout but rather just close the browser window we can track far less logouts than logins (rougly a third). We have not attempted to estimate how long a user stays on platform. Also, we do not track which problem a user is looking at. This data can only be supplied on platform level. It includes all login/logouts to this environment, not scaled down to specific tests or exercises.
Unique identifier of the user who logs in/out
Name of user who logs in/out
Can either be login or logout
Timestamp when login/logout occurred
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