IMO it is a far safer choice for a young shooter needing more experience. A semi is asking for a tragedy. Young new shooters get excited and forget to put guns back on safe all too often. A single shot or pump is far safer in the hands of the new shooter.
What he said...
My daughter's was a single shot until I was comfortable giving her a second round. I use her 390 for all new shooters at the farm. I agree you should never turn one loose with any firearm until they show diligence in their safety routine, young or old.