How long it lasts the pre-licensing course certificate?
The pre-licensing course certificate lasts for 1 year from the date it is issued, and the student certificate of completion lasts for two years.
There is something else about Enhanced or REAL ID,  if I had a REAL ID, but it has been misplaced, can I replace it by mail?
Yes, indeed, you can.  If you already have an Enhanced or REAL ID you can replace by mail and your document type will stay the same.