You joke but kids would be carted off to the principals office if they sat down or didn’t have their hands over their hearts, or if they were goofing off during “the pledge”.

I used to live there. Most houses have a flag in the front of the house near the front door. They make you stand with your hand over your heart and chant your fealty to the flag. They make you sing songs about the flag in music class as a kid. Bangers like “Grand Old Flag”.