I’ve had no problems, as long as I’ve updated the keyring first sudo pacman-key —refresh-keys. I’ve probably gone a few times not upgrading my system for a while and I had minimal problems.

In my experience, there’s also a poverty component. Some families may have to move into a shelter in a different school district or even state. Within that you can stay at a shelter for a short and long time. Education is also not usually a focus of the family, or theres not enough time. So you have a situation where you are constantly moving places and schools, and your family doesn’t take any time to teach reading outside of school for whatever reason.