I'm mid-40s. I don't remember being taught it in school, but did watch a dramatization on CBC as a teen in the 90s, which ended with text saying the last residential school was only closed a few years before (even that may have been wrong, IIRC the text said the last one closed in the late 80s, but the year we're now given is in the 90s).

That said, awareness does not equal comprehension, and it's only in the last decade that I began to comprehend the true generational trauma and heartbreak that indigenous peoples suffered.