pffft, i've got smacked with rattan palm sticks (the stuff they use for wicker baskets n stuff) if i scored anything below 60% on any test. Grew up fine, got great marks back in school, and nothing more. If anything i grew up to respect anyone older, and i also understood after awhile that my parents meant the best for me.
And people wonder why younger kids today (not all, but some, i know there's a few mature ones here) act like spoiled brats.
The first year when i was renting one of my housemates had a young daughter, they HAD to make sure she had no signs of any external wounds or blemishes, anything that would indicate abuse (and no, they loved their kid to bits, it's just that people can and do speculate the worst in schoolyards apparently).
Back in SE Asia we have a traditional method of healing people with fever and chills due to bad weather, which involves rubbing eucalyptus oil and using a coin/blunt spoon to rub the back till its red like a pine tree pattern, opens up the pores, helps you sleep, and actually (i know some will scoff at this) does help. Thing is the redness left on the skin surface needs time to heal (like 2-3 days) and doesn't look pretty, very easy to mistake as "abuse".
When the little one once got sick i asked if they did this (because the family and i come from the same country), and with a horrified look they told me they'd risk jail time if they did that.