As someone who went through school in the 1990s-2000s, I heard of kids either in my grade or my sister's grade (younger) that had to repeat a year. I'm not sure

As someone who went through school in the 1990s-2000s, I heard of kids either in my grade or my sister's grade (younger) that had to repeat a year. I'm not sure if that's changed since, or if it was location-specific.