Current education system is broken. You can't learn anything. Learning need feedback loop, but this do not exist. In school, you hand in your homework, get the feedback only after Christmas. Because human cannot evaluate 100 students' homework efficiently. Majority of academic textbook are trash. Some author even say "we have 300 new exercises in this edition" proudly, while the solution is often either nonexistent,…
>In school, you hand in your homework, get the feedback only after Christmas. Is this supposed to be a problem? Research says that delays in getting corrections are not all that important, you still end up learning even if there's a fairly large gap. https://pcl.sitehost.iu.edu/rgoldsto/courses/dunloskyimprovi...
Seems that you are quoting another paper instead. But I don't think it is definitive, as you see, n=27. Also the experiment setting is not about how long after initial test, it is about how short before the next test.
https://link.springer.com/article/10.3758/MC.37.8.1077
> The participants were 27 students enrolled in Grade 6 at The School at Columbia University in New York City.