I had the same nonsense taught to me as well. And I believed it for years. Starting when I was about 6, I spent two months of the summer with my grandparents in different parks around the country. Then when I was 11 or 12 years old we went to Yellowstone. When I wasn't out riding my bike all over the Geyser Basins, I'd be sitting at the visitor center they volunteered in reading many of the books they had for sale. I was fascinated by Yellowstone.
What I didn't know was, every time I took a serious interest in a book, my grandmother bought it for me and sent them all to me for Christmas in my snowed in clearing of the cornfield I grew up in Illinois. I read them all over and over. But back then, I never heard the word "Super volcano", I don't even think it was a word yet. They are recording its advance with the Northeast side awakens with every shudder it makes. I knew Yellowstone was a volcano, and that was huge because of the 30 x 40 mile caldera. But now I know what really makes Yellowstone tick.
Now that plate tectonics is accepted and understood, I know that the Yellowstone Hot Spot used to be over by Eureka. It was millions of years before Eureka was ever even thought of, but it was there. According to Nick Zentner, Geology Instructor at Central Washington University, due to what he referred to as the "Circular Rotation of the Pacific Northwest", the caldera that resulted from a explosion for the hotspot used to be somewhere near Eureka 55 million years ago, is now somewhere up by Tillamook, Oregon.
If you go in for that sort of thing, he has a bunch of
Geology Lectures on YouTube. I particularly like his Supervolcanoes lecture.