I grew up in the late 50's and 60's. I never got a formal spanking from my parents, just an occasional swat on the butt. I did know other kids that got spanked by their parents - most were boys. In the first couple of years of elementary school I remember the teacher would sometimes administer a spanking to both boys and girls. It was always laying across their lap. In the later grades it was mostly boys who got spankings, always from the principal in the office. I never got one in school until by the gym teacher in junior high. I think boys just tended to do get into more serious trouble than girls-things like fist fighting, throwing rocks at someone, etc. The exception I vividly remember was in the 6th grade. We lived in a rural area and a new elementary school opened in our neighborhood. The first week of school the principal, who was a woman, came around to all of the classrooms and talked about the new school and about how lucky we were to have a brand-new school with all of the modern amenities, and told us to proudly take care of our classroom and the other facilities.
About two weeks later someone wrote graffiti with lipstick on the walls of the girls bathroom that was situated closest to our classroom. After some investigation by a couple of teachers and the principal, two girls from my class admitted to committing the crime. The principal, whom you could tell was extremely upset, brought them to the front of the class and made them apologize to everyone. Then she announced it was time for their punishment, and that we were going to see what happens when someone writes on walls. We had an upright piano in the front corner of the classroom. She moved it away from the wall and grabbed on of the girls by the hand and led her behind the piano. The teacher also went behind the piano. Then she instructed her to bend over and place her elbows on the piano stool. Then surprisingly she asked our teacher to lift up the girls skirt and hold it up (girls weren't allowed to wear pants to school). Then, although we couldn't see what she was doing, the principal stooped down and lowered her underwear. She then proceeded to give her 4 or 5 very hard swats with the paddle. Then she told her to pull up her panties and stand to the side, facing away from the class. This same procedure was then repeated on the second girl. Then they were both sent to the bathroom to compose themselves. The principal then warned us all that now we knew the punishment for damaging school's property. I don't think there was any more writing on walls that year.