TimeSpent
Reporting on Study time
A frequent question on the Moodle forums is a report showing "how long" people spend on courses. If you want this because someone else has asked you to provide it, take a look at this plugin and the description of what it does.
https://moodle.org/plugins/block_dedication
If you want this information for your own benefit you might want to think about why you want the information. A plugin like block_dedication attempts to make a guess at at the amount of time spent on a course but in reality it is providing statistics relating to what has been clicked on. It is perfectly possible for students to click fairly at random, and to take long breaks staring out of the window or scrolling amusing videos on their mobile device. That is not to say that it isn't useful, it is just that like all statistics, it needs interpreting to be useful.
This raises the question why do you want to know how much time is spent on the course. It might be a more useful question to ask how much time on average elapses between someone starting the course and getting an acceptable grade. This could be useful to estimate how long the course will probably take.
