OBE and Learning

[FreeChile]

I am wondering on a practical application of OBE for learning.  For example, is it possible to recall a lecture or lessons from a physical class during an OBE experience therefore re-living the class.

Has anyone here had experiences in which they have re-lived or recalled past events vividly or lucidly?  Also, has anyone being capable of altering or interacting with those events?

If so, this could be used for reinforcement of the material learned or in preparation for a test.

Finally, how far back in time has anyone gone on such experiences?  This basically addresses the capabilities of our memories.