The more restrictive "Utility" C of G limits for intentional spinning, are for average pilot skill. At the "normal" C of G limits a safe spin recovery is still possible, but it will probably require skills beyond that of a new pilot.
ST,
Could you expand on that? It's a long time since I read a 172 POH, so I had a quick look at one for a 1978 172N. I saw a fairly standard spin-recovery technique for spins in Utility category but nothing else.