I went to parochial schools from kindergarten through HS. I seem to remember being spanked until the 6'th grade (age 10 to 11). Then of course, a note was sent home detailing your infraction to your parents.
A single swat on the bottom is nothing compared to what the nuns could think up to punish us hellions.
I do agree though, that a 16 year is too old to be spanked and a male shouldn't have been the one to administer said swat.