I remember learning to read before I started school. By the end of first grade I had read every Bobbsey Twins book in the series, (about 30 of them). They were grade reading level. Nancy Drew was next.
Remember when this was the biggest problem you encountered all day? But we figured it out. Walked to the side pulled the swing away from the puddle and jumped on it. Getting off with dry feet was the next problem. But we didn't care.