the exact thing that's wrong with "education" is that it has the format of time-delimited failure.  something must be learned, that's fine.  there is a time-limit,  beyond the time limit there is "failure."  continued "failure" eventually results in abandonment of the effort, the student is rejected, good luck toots.

abandoning the time limit allows the student to learn at the student's natural speed whatever that is.  the pressure is off, the student can take as long as necessary to learn the thing.  lifetime learning as it were.  so everybody is always "in school," working on something someone thinks is necessary to know how to do.

sidebar: and in regard to things learned it is not the facts that are being learned, it is the developed structure in which those facts are deployed.

in a structure like that a third grade class could have adults & children taking the same "classes."